{"title":"Welch WOB-L Piston Vacuum Pumps","description":"\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eWelch WOB-L piston vacuum pumps are robust, oil-free dry vacuum pumps designed for standard-duty laboratory and light industrial applications. The unique “WOB-L” (wobbling piston) design delivers reliable performance without the use of oil, eliminating oil mist contamination and the need for frequent oil changes.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003c\/h3\u003e\n\u003ch3 dir=\"auto\"\u003eWhy Choose Welch WOB-L Piston Pumps?\u003c\/h3\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e100% oil-free operation — no oil mist or backstreaming\u003c\/li\u003e\n\u003cli\u003eLow maintenance and operating costs\u003c\/li\u003e\n\u003cli\u003eLightweight, compact, and portable options available\u003c\/li\u003e\n\u003cli\u003eGood vapor tolerance for water and non-corrosive gases\u003c\/li\u003e\n\u003cli\u003eQuiet and low-vibration performance\u003c\/li\u003e\n\u003cli\u003eAvailable in both vacuum-only and vacuum\/pressure combination models\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003e\u003c\/h3\u003e\n\u003ch3 dir=\"auto\"\u003eHow WOB-L Piston Technology Works\u003c\/h3\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eThe WOB-L piston uses a unique wobbling motion instead of a traditional rotating piston. As the piston wobbles, the Teflon seal expands against the cylinder wall on the upward stroke, creating an effective seal and generating vacuum. This innovative design provides efficient pumping while keeping the pump oil-free and durable.\u003c\/p\u003e\n\u003ch3 dir=\"auto\"\u003e\u003c\/h3\u003e\n\u003ch3 dir=\"auto\"\u003eKey Advantages of WOB-L Pumps\u003c\/h3\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eClean, dry vacuum ideal for sensitive applications\u003c\/li\u003e\n\u003cli\u003eNo waste oil disposal — environmentally friendly\u003c\/li\u003e\n\u003cli\u003eLong service life with minimal maintenance\u003c\/li\u003e\n\u003cli\u003eVersatile — many models provide both vacuum and positive pressure\u003c\/li\u003e\n\u003cli\u003eCost-effective for everyday lab use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003e\u003c\/h3\u003e\n\u003ch3 dir=\"auto\"\u003ePopular Welch WOB-L Models We Carry\u003c\/h3\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e2511 Series\u003c\/strong\u003e – Compact, economical entry-level pump\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2522 Series\u003c\/strong\u003e – Popular general-purpose dry piston pump\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2546 Series\u003c\/strong\u003e – Vacuum\/pressure combination model\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2561 \/ 2562 Series\u003c\/strong\u003e – Higher capacity two-head pumps\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2581 \/ 2585 Series\u003c\/strong\u003e – High-flow models for demanding applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003e\u003c\/h3\u003e\n\u003ch3 dir=\"auto\"\u003eBest Applications\u003c\/h3\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eVacuum filtration and solid phase extraction\u003c\/li\u003e\n\u003cli\u003eVacuum drying and oven applications\u003c\/li\u003e\n\u003cli\u003eGas sampling and transfer\u003c\/li\u003e\n\u003cli\u003eAspiration and fluid handling\u003c\/li\u003e\n\u003cli\u003eAutomation and OEM equipment\u003c\/li\u003e\n\u003cli\u003eNon-corrosive vacuum needs (not for aggressive chemicals — use PTFE diaphragm pumps instead)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"auto\"\u003e\u003c\/h3\u003e\n\u003ch3 dir=\"auto\"\u003eMaintenance Tips for Longevity\u003c\/h3\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eReplace piston seals and valves every 6–12 months (depending on usage)\u003c\/li\u003e\n\u003cli\u003eKeep inlet and exhaust filters clean\u003c\/li\u003e\n\u003cli\u003eUse with a liquid trap when pumping condensable vapors\u003c\/li\u003e\n\u003cli\u003eStore in a clean, dry environment when not in use\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eChemtech Scientific is your trusted source for genuine Welch WOB-L piston vacuum pumps, replacement parts, accessories, and professional repair services.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003e\u003cstrong\u003eAcademic \u0026amp; Research Discounts Available\u003c\/strong\u003e — Contact us for special pricing.\u003c\/p\u003e","products":[{"product_id":"welch-2534b-01-wob-l-piston-vacuum-pump-115v-1-2-cfm-70-torr","title":"Welch 2534B-01 WOB-L Piston Vacuum Pump - 115V, 1.2 CFM, 70 Torr","description":"\u003ctable width=\"582\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" width=\"582\"\u003e\n\u003cp\u003e\u003cstrong\u003eThe Welch 2534B-01 is a one head WOB-L piston vacuum pump. The cast aluminum housing assures durability. The inlet side vacuum gauge and controller sit atop a catchpot with a built in float ball to protect the pump from flooding. The 2534B-01 is a bargain for it's performance and quality, without competition.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarning: The 2534B-01 is a standard duty vacuum pump. The 2534B-01 pump will fail prematurely if operated on chemical duty applications. Please consult your Chemtech Scientific Representative for consultation, should your process include organic\/acid\/base\/corrosive materials.                                          \u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"175\"\u003e\u003cstrong\u003eWhat's included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eVacuum and pressure gauges, controller, float ball flooding protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"175\"\u003e\u003cstrong\u003eCommon accessory, not included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eFoot switch control 1430A or 1430B\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePumping Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e34 lit\/min. (1.2 CFM)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Vacuum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e70 Torr (93 mbar)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOil Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1 qt\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTubing Needed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInlet Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eUNIBARB\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExhaust\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e50 PSI\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions LxWxH inches\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e8.1 x 8.8 x 10\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e11.7 lb (5.3 kg)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e115V, 60 hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1133058496,"sku":"2534B-01","price":807.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2534b-01-wob-l-piston-vacuum-pump-25479543849109.jpg?v=1779796171"},{"product_id":"welch-2050b-01-laboratory-vacuum-pump","title":"Welch 2050B-01 Laboratory Vacuum Pump","description":"\u003ctable width=\"427\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003eThe Welch 2050B-01 is designed for laboratory field use, including a 12v power adapter to plug into a DC receptacle (cigarette lighter type) in the researchers; car or boat.\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003eField or lab filtrations and sampling\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003eLaboratory Vacuum Pumps\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eFree Air Displacement m3\/hr (l\/min.) @50Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003e.3(8.5)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eMaximum Vacuum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003e190\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eMax Pressure PSIG (pascal)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003e22.4\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eIntake Thread NPT\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003e3\/8\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eOverall Dimensions LxWxH in. (cm)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003e5.3(2.4)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eShip Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003e7(3.2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1136657820,"sku":"2050B-01","price":785.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2050b-01-laboratory-vacuum-pump-25479614136469.jpg?v=1779795928"},{"product_id":"welch-2050c-02-vacuum-pump-european-voltage-dc-adapter","title":"Welch 2050C-02 Vacuum Pump European Voltage DC adapter","description":"\u003ctable width=\"427\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003eThe Welch 2050C-02 is designed for laboratory field use, including a 12v power adapter to plug into a DC receptacle (cigarette lighter type) in the researchers; car or boat.\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003eField or lab filtrations and sampling\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003eLaboratory Vacuum Pumps\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eFree Air Displacement m3\/hr (l\/min.) @50Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003e.3(8.5)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eMaximum Vacuum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003e190\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eMax Pressure PSIG (pascal)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003e22.4\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eIntake Thread NPT\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003e3\/8\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eOverall Dimensions LxWxH in. (cm)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003e5.3(2.4)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eShip Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"193\"\u003e\u003cstrong\u003e7(3.2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1136664416,"sku":"2050C-02","price":785.18,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2050c-02-vacuum-pump-european-voltage-dc-adapter-15978987616.jpg?v=1779796792"},{"product_id":"welch-2060c-02-vacuum-pump-dc-european-voltage-wiring","title":"Welch 2060C-02 Vacuum Pump DC European voltage\/wiring","description":"\u003ctable width=\"447\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003eThe Welch 2060C-02 is designed for laboratory field use, including a 12v power adapter to plug into a DC receptacle (cigarette lighter type) in the researchers; car or boat.\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003eLaboratory Vacuum Pumps\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eFree Air Displacement m3\/hr (l\/min.) @50Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003e0.46(13)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eMaximum Vacuum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003e200 (265)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eMax Pressure PSIG (pascal)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003e22\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eIntake Thread NPT\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003e3\/8\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eOverall Dimensions LxWxH in. (cm)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003e11(5)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eShip Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003e13(5.9)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1136666480,"sku":"2060C-02","price":937.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2060c-02-vacuum-pump-dc-european-voltage-wiring-15979020384.jpg?v=1779797050"},{"product_id":"welch-2522c-01-vacuum-pump","title":"Welch 2522C-01 Vacuum Pump","description":"\u003cp\u003e\u003cstrong\u003eThe Welch 2522C-01 is a one head WOB-L piston vacuum pump. The cast aluminum housing assures durability. The inlet side vacuum gauge and controller sit atop a catch pot with a built in float ball to protect the pump from flooding. The 2522B-01 is a bargain for it's performance and quality, without competition.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarning: The Welch 2522C-01 vacuum pump is a standard duty vacuum pump. The 2522C-01 pump will fail prematurely if operated on chemical duty applications. Please consult your Chemtech Scientific Representative for consultation, should your process include organic\/acid\/base\/corrosive materials.                                              \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat's included\u003c\/strong\u003e \u003cstrong\u003eVacuum and pressure gauges, controller, float ball flooding protection\u003c\/strong\u003e \u003cstrong\u003eCommon accessory, not included\u003c\/strong\u003e \u003cstrong\u003eFoot switch control 1430A or 1430B\u003c\/strong\u003e \u003cstrong\u003ePumping Speed\u003c\/strong\u003e \u003cstrong\u003e22 lit\/min. (0.76 CFM)\u003c\/strong\u003e \u003cstrong\u003eMax. Vacuum\u003c\/strong\u003e \u003cstrong\u003e100 Torr \u003c\/strong\u003e \u003cstrong\u003eTubing Needed\u003c\/strong\u003e \u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e \u003cstrong\u003eInlet Connection\u003c\/strong\u003e \u003cstrong\u003eUNIBARB \u003c\/strong\u003e \u003cstrong\u003e Exhaust \u003c\/strong\u003e \u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e \u003cstrong\u003eMax. Pressure\u003c\/strong\u003e \u003cstrong\u003e100 PSI\u003c\/strong\u003e \u003cstrong\u003eDimensions LxWxH inches\u003c\/strong\u003e \u003cstrong\u003e8.1 x 8.8 x 10\u003c\/strong\u003e \u003cstrong\u003eShip Weight\u003c\/strong\u003e \u003cstrong\u003e17 LBS\u003c\/strong\u003e \u003cstrong\u003eWiring\u003c\/strong\u003e \u003cstrong\u003e230v, 60 hz\u003c\/strong\u003e\u003c\/p\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1137393720,"sku":"2522C-01","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2522c-01-vacuum-pump-16060219488.jpg?v=1779795259"},{"product_id":"welch-2522c-02-vacuum-pump","title":"Welch 2522C-02, Vacuum Pump","description":"\u003cp\u003e\u003cspan data-sheets-root=\"1\"\u003eWob-l Pressure\/Vacuum Dry Pump, 230V 50Hz 1Ph, with CE mark\u003c\/span\u003e\u003cspan data-sheets-root=\"1\"\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1137397760,"sku":"2522C-02","price":719.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2522c-02-vacuum-pump-16061366368.jpg?v=1779796184"},{"product_id":"welch-2522b-01-dry-piston-wob-l-vacuum-pump","title":"Welch 2522B-01 Dry Piston WOB-L Vacuum Pump","description":"\u003ctable width=\"584\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" width=\"584\"\u003e\n\u003cp\u003e\u003cstrong\u003eThe Welch 2522B-01 is a one head WOB-L piston vacuum pump. The cast aluminum housing assures durability. The inlet side vacuum gauge and controller sit atop a catchpot with a built in float ball to protect the pump from flooding.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe 2522B-01 is a bargain for it's performance and quality, without competition. Warning: The 2522B-01 is a standard duty vacuum pump. The 2522B-01 pump will fail prematurely if operated on chemical duty applications.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlease consult your Chemtech Scientific Representative for consultation, should your process include organic\/acid\/base\/corrosive materials.                                              \u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"178\"\u003e\u003cstrong\u003eWhat's included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eVacuum and pressure gauges, controller, float ball flooding protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"178\"\u003e\u003cstrong\u003eCommon accessory, not included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eFoot switch control 1430A or 1430B\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePumping Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e22 lit\/min. (0.76 CFM)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Vacuum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e100 Torr \u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTubing Needed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInlet Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eUNIBARB \u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e Exhaust \u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e100 PSI\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions LxWxH inches\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e8.1 x 8.8 x 10\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShip Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e17 LBS\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e115V, 60 hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1150002728,"sku":"2522B-01","price":719.61,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2522b-01-dry-piston-wob-l-vacuum-pump-25479555416213.jpg?v=1779796178"},{"product_id":"welch-2546b-01-wob-l-dry-piston-pressure-vacuum-pump","title":"Welch 2546B-01 WOB-L Dry Piston \/ Pressure Vacuum Pump","description":"\u003ctable width=\"571\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" width=\"571\"\u003e\n\u003cp\u003e\u003cstrong\u003eThe Welch 2546B-01 is a one head WOB-L piston vacuum pump. The cast aluminum housing assures durability. The inlet side vacuum gauge and controller sit atop a catchpot with a built in float ball to protect the pump from flooding.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe 2546B-01 is a bargain for it's performance and quality, without competition.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWarning: The 2546B-01 is a standard duty vacuum pump. The 2546B-01 pump will fail prematurely if operated on chemical duty applications. Please consult your Chemtech Scientific Representative for consultation, should your process include organic\/acid\/base\/corrosive materials.                                              \u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"162\"\u003e\u003cstrong\u003eWhat's included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eVacuum and pressure gauges, controller, float ball flooding protection\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"162\"\u003e\u003cstrong\u003eCommon accessory, not included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eFoot switch control 1430A or 1430B\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePumping Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e45 Lit\/min. (1.6 CFM)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Vacuum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e60 Torr 27.6\" Hg\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTubing Needed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInlet Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eUNIBARB \u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e Exhaust \u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e100 PSI\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions LxWxH inches\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e10x7.5x9 inches\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShip Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e13 LBS\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e115V, 60 hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1150009964,"sku":"2546B-01","price":894.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2546b-01-wob-l-dry-piston-pressure-vacuum-pump-25479515668629.jpg?v=1779794288"},{"product_id":"welch-2567b-50-wob-l-vacuum-pump","title":"Welch 2567B-50 WOB-L Vacuum Pump","description":"\u003ctable style=\"height: 943px; width: 656px;\" width=\"536\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 627.05px;\" colspan=\"2\" width=\"416\"\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eThe Welch 2567B-50 is a two head WOB-L piston high capacity vacuum pump. The cast aluminum housing assures durability. The inlet side vacuum gauge and controller sit atop a liquid separator. The 2567B-50 is a bargain for its performance and quality, without competition.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eWarning: The 2567B-50 is a standard duty vacuum pump. The 2567B-50 pump will fail prematurely if operated on chemical duty applications. Please consult your Chemtech Scientific Representative for consultation, should your process include organic\/acid\/base\/corrosive materials.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eWith a strong 100 L\/min (3.5 CFM) pumping speed and deep vacuum capability, the Welch 2567B-50 is an excellent choice for non-corrosive laboratory applications such as vacuum filtration, aspiration, drying, and degassing. Its durable WOB-L piston design, built-in liquid separator, and easy-to-read vacuum gauge make it a reliable and user-friendly pump for everyday lab use.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eFor chemical or corrosive applications, we recommend Welch’s PTFE DryFast diaphragm pumps instead.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003e\u003cstrong\u003eNeed help choosing the right pump?\u003c\/strong\u003e Contact \u003ca href=\"mailto:support@chemtechsci.com\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"\u003esupport@chemtechsci.com\u003c\/a\u003e or call (484) 424-9415.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e                       \u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 270px;\" width=\"210\"\u003e\u003cstrong\u003eWhat's included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 357.05px;\"\u003e\u003cstrong\u003eVacuum and pressure gauges, controller, liquid separator\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 270px;\" width=\"210\"\u003e\u003cstrong\u003eCommon accessory, not included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 357.05px;\"\u003e\u003cstrong\u003eFoot switch control 1430A or 1430B\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 270px;\"\u003e\u003cstrong\u003ePumping Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 357.05px;\"\u003e\u003cstrong\u003e100 Lit.min (3.5CFM)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 270px;\"\u003e\u003cstrong\u003eMax. Vacuum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 357.05px;\"\u003e\u003cstrong\u003e60 Torr \u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 270px;\"\u003e\u003cstrong\u003eTubing Needed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 357.05px;\"\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 270px;\"\u003e\u003cstrong\u003eInlet Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 357.05px;\"\u003e\u003cstrong\u003eUNIBARB \u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 270px;\"\u003e\u003cstrong\u003e Exhaust \u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 357.05px;\"\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 270px;\"\u003e\u003cstrong\u003eDimensions LxWxH inches\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 357.05px;\"\u003e\u003cstrong\u003e15x10x10 inches\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 270px;\"\u003e\u003cstrong\u003eShip Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 357.05px;\"\u003e\u003cstrong\u003e16.5 LBS\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 270px;\"\u003e\u003cstrong\u003eWiring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 357.05px;\"\u003e\u003cstrong\u003e115V, 60 hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1150020720,"sku":null,"price":1648.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2567b-50-wob-l-vacuum-pump-25479479820437.jpg?v=1779794291"},{"product_id":"welch-2561b-50-wob-l-piston-vacuum-pump","title":"Welch 2561B-50 WOB-L Piston Vacuum Pump","description":"\u003ctable width=\"557\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" width=\"557\"\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eThe Welch 2561B-50 is a two head WOB-L piston high capacity vacuum pump. The cast aluminum housing assures durability. The inlet side vacuum gauge and controller sit atop a liquid separator. The 2561B-50 is a bargain for its performance and quality, without competition.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eWarning: The 2561B-50 is a standard duty vacuum pump. The 2561B-50 pump will fail prematurely if operated on chemical duty applications. Please consult your Chemtech Scientific Representative for consultation, should your process include organic\/acid\/base\/corrosive materials.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eWith a powerful 100 L\/min (3.5 CFM) pumping speed and reliable deep vacuum performance, the Welch 2561B-50 is an excellent choice for non-corrosive laboratory applications. It features a durable WOB-L piston design, built-in liquid separator, and easy-to-read vacuum gauge for convenient operation. Ideal for vacuum filtration, aspiration, degassing, and general lab vacuum needs. For chemical or corrosive vapors, we strongly recommend switching to Welch’s chemically resistant PTFE DryFast diaphragm pumps.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eContact \u003ca href=\"mailto:support@chemtechsci.com\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"\u003esupport@chemtechsci.com\u003c\/a\u003e or call (484) 424-9415 for assistance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e                                \u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"218\"\u003e\u003cstrong\u003eWhat's included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eVacuum and pressure gauges, controller, liquid separator\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"218\"\u003e\u003cstrong\u003eCommon accessory, not included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eFoot switch control 1430A or 1430B\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePumping Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e65 Lit.min (2.3 CFM)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Vacuum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e5 Torr \u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTubing Needed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInlet Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eUNIBARB \u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e Exhaust \u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions LxWxH inches\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e17.3x6.5x10.5 inches\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShip Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e24 LBS\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e115V, 60 hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1150022592,"sku":null,"price":2070.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2561b-50-wob-l-piston-vacuum-pump-16465330272.jpg?v=1779795254"},{"product_id":"welch-2562b-01-wob-l-piston-vacuum-pump","title":"Welch 2562B-01 WOB-L Piston Vacuum Pump","description":"\u003ctable style=\"height: 657px; width: 788px;\" width=\"566\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 759.05px;\" colspan=\"2\" width=\"344\"\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eThe Welch 2562B-01 is a two head WOB-L piston high capacity vacuum pump. The perfect pump for the Rice Porosity Test. The cast aluminum housing assures durability. The 2562B-01 is a bargain for its performance and quality, without competition.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eWarning: The 2562B-01 is a standard duty vacuum pump. The 2562B-01 pump will fail prematurely if operated on chemical duty applications. Please consult your Chemtech Scientific Representative for consultation, should your process include organic\/acid\/base\/corrosive materials.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eWith strong 100 L\/min (3.5 CFM) pumping speed and reliable performance, the Welch 2562B-01 is an excellent choice for non-corrosive laboratory applications such as the Rice Porosity Test, vacuum filtration, aspiration, degassing, and general lab vacuum needs. Its durable WOB-L piston design and cast aluminum housing provide long-lasting reliability. For chemical or corrosive vapors, we recommend switching to Welch’s chemically resistant PTFE DryFast diaphragm pumps instead.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eContact \u003ca href=\"mailto:support@chemtechsci.com\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"\u003esupport@chemtechsci.com\u003c\/a\u003e or call (484) 424-9415 for assistance selecting the right pump for your application.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca title=\"Welch 2562B-01 WOB-L Piston Vacuum Pump Manual\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/files\/Welch_2562B-01_WOB-L_Piston_Vacuum_Pump_Manual.pdf?v=1593620325\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eWelch 2562B-01 Owner's Manual\u003c\/a\u003e\u003c\/strong\u003e     \u003cstrong\u003e                        \u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 253px;\" width=\"142\"\u003e\u003cstrong\u003eCommon accessory, not included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 506.05px;\"\u003e\u003cstrong\u003eFoot switch control 1430A or 1430B\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 253px;\"\u003e\u003cstrong\u003ePumping Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 506.05px;\"\u003e\u003cstrong\u003e65 Lit.min (2.3 CFM)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 253px;\"\u003e\u003cstrong\u003eMax. Vacuum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 506.05px;\"\u003e\u003cstrong\u003e7.5 Torr \u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 253px;\"\u003e\u003cstrong\u003eTubing Needed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 506.05px;\"\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 253px;\"\u003e\u003cstrong\u003eInlet Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 506.05px;\"\u003e\u003cstrong\u003eUNIBARB \u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 253px;\"\u003e\u003cstrong\u003e Exhaust \u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 506.05px;\"\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 253px;\"\u003e\u003cstrong\u003eDimensions LxWxH inches\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 506.05px;\"\u003e\u003cstrong\u003e17.3x6.5x10.5 inches\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 253px;\"\u003e\u003cstrong\u003eShip Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 506.05px;\"\u003e\u003cstrong\u003e24 LBS\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 253px;\"\u003e\u003cstrong\u003eWiring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 506.05px;\"\u003e\u003cstrong\u003e115V, 60 hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1150025428,"sku":"2562B-01","price":1308.08,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2562b-01-wob-l-piston-vacuum-pump-25479497023637.jpg?v=1779793943"},{"product_id":"welch-2581b-50-wob-l-piston-vacuum-pump","title":"Welch 2581B-50 WOB-L Piston Vacuum Pump","description":"\u003ctable style=\"height: 924px; width: 704px;\" width=\"565\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 675.05px;\" colspan=\"2\" width=\"426\"\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eThe Welch 2581B-50 is a two head WOB-L piston high capacity vacuum pump. The cast aluminum housing assures durability. The inlet side vacuum gauge and controller sit atop a liquid separator. The 2581B-50 is a bargain for its performance and quality, without competition.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eWarning: The 2581B-50 is a standard duty vacuum pump. The 2581B-50 pump will fail prematurely if operated on chemical duty applications. Please consult your Chemtech Scientific Representative for consultation, should your process include organic\/acid\/base\/corrosive materials.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eWith a strong 100 L\/min (3.5 CFM) pumping speed and reliable deep vacuum capability, the Welch 2581B-50 is an excellent choice for non-corrosive laboratory and light industrial applications. It features a durable WOB-L piston design, built-in liquid separator, and easy-to-read vacuum gauge for convenient operation. Ideal for vacuum filtration, aspiration, degassing, drying, and general lab vacuum needs. For chemical or corrosive vapors, we strongly recommend Welch’s chemically resistant PTFE DryFast diaphragm pumps.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eContact \u003ca href=\"mailto:support@chemtechsci.com\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"\u003esupport@chemtechsci.com\u003c\/a\u003e or call (484) 424-9415 for assistance.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #000000;\"\u003e\u003cspan style=\"color: #2b00ff;\"\u003e\u003ca style=\"color: #2b00ff;\" title=\"Owners Manual for Welch 2581B-50 Wob-l\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/files\/Owners_Manual_for_Dry_Vacuum_Pump_Model_2581.pdf?10871249667579475751\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eOwner's Manual for Welch 2581B-50 Wob-l \u003c\/a\u003e \u003c\/span\u003e  \u003c\/span\u003e                                      \u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 263.5px;\" width=\"194\"\u003e\u003cstrong\u003eWhat's included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 411.55px;\"\u003e\u003cstrong\u003eVacuum and pressure gauges, controller, liquid separator\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 263.5px;\" width=\"194\"\u003e\u003cstrong\u003eCommon accessory, not included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 411.55px;\"\u003e\u003cstrong\u003eFoot switch control 1430A or 1430B\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 263.5px;\"\u003e\u003cstrong\u003ePumping Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 411.55px;\"\u003e\u003cstrong\u003e100 Lit.min (3.5 CFM)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 263.5px;\"\u003e\u003cstrong\u003eMax. Vacuum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 411.55px;\"\u003e\u003cstrong\u003e5 Torr \u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 263.5px;\"\u003e\u003cstrong\u003eTubing Needed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 411.55px;\"\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 263.5px;\"\u003e\u003cstrong\u003eInlet Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 411.55px;\"\u003e\u003cstrong\u003eUNIBARB \u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 263.5px;\"\u003e\u003cstrong\u003e Exhaust \u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 411.55px;\"\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 263.5px;\"\u003e\u003cstrong\u003eDimensions LxWxH inches\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 411.55px;\"\u003e\u003cstrong\u003e17.3x6.5x10.5 inches\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 263.5px;\"\u003e\u003cstrong\u003eShip Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 411.55px;\"\u003e\u003cstrong\u003e32 LBS\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 263.5px;\"\u003e\u003cstrong\u003eWiring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 411.55px;\"\u003e\u003cstrong\u003e115V, 60 hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1150026752,"sku":null,"price":2834.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2581b-50-wob-l-piston-vacuum-pump-16465526880.jpg?v=1779797054"},{"product_id":"welch-2585b-50-wob-l-piston-vacuum-pump","title":"Welch 2585B-50 WOB-L Piston Vacuum Pump","description":"\u003ctable width=\"581\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" width=\"581\"\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eThe Welch 2585B-50 is a two head WOB-L piston high capacity vacuum pump. The cast aluminum housing assures durability. The inlet side vacuum gauge and controller sit atop a liquid separator. The 2585B-50 is a bargain for its performance and quality, without competition.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eWarning: The 2585B-50 is a standard duty vacuum pump. The 2585B-50 pump will fail prematurely if operated on chemical duty applications. Please consult your Chemtech Scientific Representative for consultation, should your process include organic\/acid\/base\/corrosive materials.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eWith a powerful 100 L\/min (3.5 CFM) pumping speed and reliable performance, the Welch 2585B-50 is an excellent choice for non-corrosive laboratory and light industrial applications. It features a durable WOB-L piston design, built-in liquid separator, and easy-to-read vacuum gauge for convenient operation. Ideal for vacuum filtration, aspiration, degassing, drying, and general lab vacuum needs. For chemical or corrosive vapors, we strongly recommend switching to Welch’s chemically resistant PTFE DryFast diaphragm pumps.\u003c\/p\u003e\n\u003cp dir=\"auto\" style=\"white-space: pre-wrap;\"\u003eContact \u003ca href=\"mailto:support@chemtechsci.com\" target=\"_blank\" rel=\"noopener noreferrer nofollow\"\u003esupport@chemtechsci.com\u003c\/a\u003e or call (484) 424-9415 for assistance.\u003c\/p\u003e\n\u003cstrong\u003e                                           \u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"286\"\u003e\u003cstrong\u003eWhat's included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eVacuum and pressure gauges, controller, liquid separator\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"286\"\u003e\u003cstrong\u003eCommon accessory, not included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eFoot switch control 1430A or 1430B\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePumping Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e201 Lit.min (7.1 CFM)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Vacuum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e60 Torr, 27.6\" Hg\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTubing Needed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInlet Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eUNIBARB \u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e Exhaust \u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions LxWxH inches\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e17.3x6.5x10.5 inches\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShip Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e32 LBS\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e115V, 60 hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1150027764,"sku":null,"price":2333.13,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2585b-50-wob-l-piston-vacuum-pump-25479395934357.jpg?v=1779793932"},{"product_id":"welch-2060b-01-portable-dc-vacuum-pump","title":"Welch 2060B-01 Portable DC Vacuum Pump","description":"\u003ctable width=\"447\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003eThe Welch 2060B-01 is designed for laboratory field use, including a 12v power adapter to plug into a DC receptacle (cigarette lighter type) in the researchers; car or boat.\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003eLaboratory Vacuum Pumps\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eFree Air Displacement m3\/hr (l\/min.) @50Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003e0.46(13)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eMaximum Vacuum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003e200 (265)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eMax Pressure PSIG (pascal)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003e22\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eIntake Thread NPT\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003e3\/8\"\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eOverall Dimensions LxWxH in. (cm)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003e11(5)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"234\"\u003e\u003cstrong\u003eShip Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"213\"\u003e\u003cstrong\u003e13(5.9)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1150042232,"sku":null,"price":937.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2060b-01-portable-dc-vacuum-pump-25479602962581.jpg?v=1779797054"},{"product_id":"welch-2585b-01-wob-l-piston-vacuum-pump-115v-60-hz","title":"Welch 2585B-01, WOB-L piston vacuum pump 115v 60 Hz","description":"\u003cp\u003eWelch 2585B-01 WOB-L piston vacuum pump -Excellent dry, high throughput flow pump at 7.1 CFM (201 lit\/min). Ultimate pressure is 60 Torr (27.6 \"Hg). Great for networking multiple vacuum ports. Pump is standard duty and subject to failure, if used in acid\/chemistry applications.\u003c\/p\u003e\n\u003cp\u003eSee Welch 2585B-50 for version including Vacuum gauge, controller, liquid separator\u003cstrong\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"516\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"165\"\u003eCommon accessory, not included\u003c\/td\u003e\n\u003ctd width=\"351\"\u003eVacuum gauge, controller, liquid separator - Foot switch control 1430A or 1430B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePumping Speed\u003c\/td\u003e\n\u003ctd\u003e201 Lit.min (7.1 CFM)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Vacuum\u003c\/td\u003e\n\u003ctd\u003e60 Torr, 27.6\" Hg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTubing Needed\u003c\/td\u003e\n\u003ctd\u003e1\/4\" ID\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInlet Connection\u003c\/td\u003e\n\u003ctd\u003eUNIBARB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExhaust\u003c\/td\u003e\n\u003ctd\u003e1\/4\" ID\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions LxWxH inches\u003c\/td\u003e\n\u003ctd\u003e17.3x6.5x10.5 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShip Weight\u003c\/td\u003e\n\u003ctd\u003e32 LBS \u003cbr\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring\u003c\/td\u003e\n\u003ctd\u003e115V, 60 hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"Chemtech Scientific","offers":[{"title":"Default Title","offer_id":1212967788,"sku":null,"price":1910.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2585b-01-wob-l-piston-vacuum-pump-115v-60-hz-25479398686869.jpg?v=1779796029"},{"product_id":"welch-2511b-01-wob-l-pump","title":"Welch 2511B-01 WOB-L Pump","description":"\u003cdiv class=\"lga1-lga4 md1-md2 sm-all\"\u003e\n\u003cul\u003e\n\u003cli\u003eEconomical\u003c\/li\u003e\n\u003cli\u003eOil Free\u003c\/li\u003e\n\u003cli\u003eLight, Portable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lga5-lga8 md3-md4 sm-all\"\u003e\n\u003ch2\u003eSuggested Applications\u003c\/h2\u003e\nVacuum Filtration\u003c\/div\u003e\n\u003cdiv class=\"lga5-lga8 md3-md4 sm-all\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"lga5-lga8 md3-md4 sm-all\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"clearfix lga-all md-all sm-all\"\u003e\n\u003cp\u003eHandy utility vacuum pump is perfect for basic lab operations .Portable, dry or aqueous applications only, vacuum \/ pressure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"clearfix\"\u003e\u003c\/div\u003e\n\u003ctable width=\"459\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e2511\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003eFiltration, Aspiration, Desiccation, Replace water aspirator, Vacuum Drying,\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003eLaboratory Vacuum Pump\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eFree Air Displacement cfm (l\/min.) @60Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e0.39(11)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eFree Air Displacement m3\/hr (l\/min.) @50Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e0.55(9.2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eUltimate Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e219(292)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eMaximum Vacuum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e21.3\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eMax Pressure PSIG (pascal)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e33(3.3 x 105)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eMotor Horsepower (watts)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e1\/30(25)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eAdjustable Vac. \/ Gas Ballast\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eTubing Needed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e3\/16(5)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eIntake Thread NPT\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e3\/16 in. Hose\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eOverall Dimensions LxWxH in. (cm)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e7.6x4.5x7.5 (19.4x11.4x19.1)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eShip Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e6(2.7)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eShipping Carton Dimensions LxWxH in. (cm)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e11x7x8.3 (28x18x21)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eWiring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e115V, 60Hz 1 Ph with N. Amer. 115V Plug\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1213318512,"sku":null,"price":414.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2511b-01-wob-l-pump-25479557578901.jpg?v=1779796194"},{"product_id":"welch-2511c-02-pressure-vacuum-station-230v-50hz-1ph","title":"Welch 2511C-02 Pressure Vacuum Station, 230V 50Hz 1Ph","description":"\u003cdiv class=\"lga1-lga4 md1-md2 sm-all\"\u003e\n\u003cul\u003e\n\u003cli\u003eEconomical\u003c\/li\u003e\n\u003cli\u003eOil Free\u003c\/li\u003e\n\u003cli\u003eLight, Portable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"lga5-lga8 md3-md4 sm-all\"\u003e\n\u003ch2\u003eSuggested Applications\u003c\/h2\u003e\nVacuum Filtration\u003c\/div\u003e\n\u003cdiv class=\"clearfix lga-all md-all sm-all\"\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eHandy utility vacuum pump is perfect for basic lab operations .Portable, dry or aqueous applications only, vacuum \/ pressure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ctable width=\"459\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e2511\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003eFiltration, Aspiration, Desiccation, Replace water aspirator, Vacuum Drying,\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003eLaboratory Vacuum Pump\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eFree Air Displacement cfm (l\/min.) @60Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e0.39(11)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eFree Air Displacement m3\/hr (l\/min.) @50Hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e0.55(9.2)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eUltimate Pressure\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e219(292)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eMaximum Vacuum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e21.3\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eMax Pressure PSIG (pascal)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e33(3.3 x 105)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eMotor Horsepower (watts)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e1\/30(25)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eAdjustable Vac. \/ Gas Ballast\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eTubing Needed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e3\/16(5)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eIntake Thread NPT\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e3\/16 in. Hose\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eOverall Dimensions LxWxH in. (cm)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e7.6x4.5x7.5 (19.4x11.4x19.1)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eShip Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e6(2.7)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eShipping Carton Dimensions LxWxH in. (cm)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e11x7x8.3 (28x18x21)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"184\"\u003e\u003cstrong\u003eWiring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd width=\"275\"\u003e\u003cstrong\u003e230V, 50Hz 1 Ph with Cont. Euro. (Schuko) Plug\u003cbr\u003e\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":1213327472,"sku":null,"price":414.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2511c-02-pressure-vacuum-station-230v-50hz-1ph-17657430112.jpg?v=1779796800"},{"product_id":"welch-2561b-50-vacuum-2561-wob-l-piston-vacuum-pump-115v-60hz","title":"Welch 2561B-50, Vacuum 2561 WOB-L Piston Vacuum Pump, 115V 60Hz","description":"\u003cp\u003e\u003cstrong\u003eWelch Vacuum 2561 WOB-L Piston Vacuum Pump is a two head WOB-L piston High capacity pump. The cast aluminum housing assures durability. The inlet side vacuum gauge and controller sit atop a liquid separator. The 115V 60Hz is Welch model# 2561B-50 pump. This pump is a bargain for it's performance and quality, without competition. Warning: The Welch 2561B-50 is a standard duty vacuum pump.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"557\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd width=\"557\" colspan=\"2\"\u003e\n\u003cp\u003e\u003cstrong\u003eThe Welch Vacuum 2561B-50 pump will fail prematurely if operated on chemical duty applications. Please consult your Chemtech Scientific Representative for consultation, should your process include organic\/acid\/base\/corrosive materials.                                              \u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"218\"\u003e\u003cstrong\u003eWhat's included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eVacuum and pressure gauges, controller, liquid separator\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd width=\"218\"\u003e\u003cstrong\u003eCommon accessory, not included\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eFoot switch control 1430A or 1430B\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePumping Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e65 Lit.min (2.3 CFM)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax. Vacuum\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e5 Torr \u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTubing Needed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInlet Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eUNIBARB \u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003e Exhaust \u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e1\/4\" ID\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions LxWxH inches\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e17.3x6.5x10.5 inches\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShip Weight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e24 LBS\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003e115V, 60 hz\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Welch","offers":[{"title":"Default Title","offer_id":32037054677088,"sku":null,"price":2070.85,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/products\/welch-2561b-50-vacuum-2561-wob-l-piston-vacuum-pump-115v-60hz-7714131542112.jpg?v=1779796229"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/2467\/collections\/welch-wob-l-piston-1316103.jpg?v=1773507841","url":"https:\/\/www.chemtechsci.com\/collections\/welch-wob-l-piston-vacuum-pumps.oembed","provider":"Chemtech Scientific Incorporated","version":"1.0","type":"link"}