Three features to extend service intervals: Cool running slows rate of corrosion and slows down rates of oil consumption Large oil capacity minimizes the rates of oil breakdown and reduces chemical attack within pump Internal surface protection on pump internals and PTFE coating on…

Famous Durability Deep Vacuum to 10-4 torr Low RPM for cooler operation Address a wide variety of laboratory vacuum needs with these rugged oil-seal pumps. Use DuoSeal vacuum pumps for Schlenk drying manifolds, freeze drying, vacuum ovens, glove boxes, degassing, concentrations,…

Dry Ice Cold Traps are recommended for pumps when doing rotary evaporation, drying solvents, vacuum distillation, centrifugal concentration or any other process involving volatile solvents. 2.8 L center well that holds a dry-ice and alcohol slurry capable of producing temperatures as low as…

GEMINI® Dry Vacuum Pumps - Powerful Go-Anywhere Vacuum. Use in lab or field - Portable, Quiet. GEMINI pumps are DC powered – plug in to your vehicle or standard 115V outlet. Perfect for sampling, filtration, degassing, and other mid-vacuum applications. Advanced chemical resistance enables use with…

Product Details Corrosion Resistant Fitted Explosion Proof Motor (Class I, Groups C & D; Class II Groups F & G) with CSA/UL Mark Portable Suggested Applications Vacuum Filtration Vacuum Oven Welch corrosion-resistant diaphragm pumps are driven by…

DUOSEAL pump oil with low vapor pressure, ideal viscosity is recommended for use with DUOSEAL or any other belt-driven vacuum pump. No additives or inhibitors. Exhaust filters trap oil mist and reduce noise. Replaceable elements reduce maintenance costs.

Standard Duty Handy Welch pump is perfect for basic lab vacuum operations. Dry or aqueous vapors only, portable, vacuum or pressure, 115V

Specifications are identical to the standard 1400B models. Explosion proof units are specialized to prevent sparking etc. that could ignite a flammable gas mixture in the room. These pumps have to be hard-wired in by an electrician. Please contact customer service for technical requirements.

DirecTorr Gold oil is a synthetic hydrocarbon oil put through a double molecular distillation process. Gold oil is extremely stable under high temperature, has excellent resistance to chemical attack and provides superior protection for the pump's internal metal components. Recommended for…

Affordable Model 2019 vacuum pump is durable and chemcial resistant. Use Model 2019 for vacuum filtration, desiccation, degassing, and other mid-range vacuum applications. Free air flow 37L/min; Maximum vacuum 24" Hg. Pump can also be used to pressurize up to 18 PSIG. Comes standard with…

Portable, lightweight thermocouple vacuum gauge with recorder output (0-10VDC) for monitoring vacuum pressure. Single station model 1515 has a range of 0-5000 mtorr. Supplied with one permanently attached probe cable and one gauge tube.

Filters trap exhaust oil mist and reduce pump noise. They are supplied with housing and replaceable filter.

The Welch CRVpro8 Chem is effective for freeze drying or concentration of samples using a lyophilizer, including harsh chemicals such as TFA, Acetonitrile, HBr and others. These chemicals quickly attack the vacuum pump oil of unprotected vacuum pumps. CRVpro8 Chem is engineered to better combat the…

Durable, chemical resistant PTFE construction Easy to operate and maintain Use Welch ® DryFast ® diaphragm vacuum pumps for tough applications requiring chemical resistance. DryFast’s Advanced Vapor Management controls vacuum for precise distillations using handy…

Tune-able Vacuum for Chemical Applications - filtrations and volatile solvent evaporations - rotovaps, concentrators, & vacuum ovens. Achieve precise vacuum control for organic evaporations with Welch's Advanced Vapor Management (AVM). Choose from six dry PTFE vacuum pump models with flows…

Handheld Vacuum Gauges - Monitor Multipoint Vacuum Levels. Quick-connecting and Precise; Mercury-Free. Gain insight into your vacuum application with these portable, mercury-free gauges. Welch precision vacuum gauges are easy to connect - perfect for dynamic monitoring or leak troubleshooting.…

Autoclavable receiver High flow Bleach resistant construction Cell culture stations are a portable solution for aspirating tissue culture samples. Unit will shut off automatically when 1.2 L collection receiver is full. All wetted parts are treated for corrosion protection from…

Economical Oil Free Adjustable Vacuum / Pressure Use these affordable oil-free pumps to provide convenient vacuum throughout the lab. Welch WOB-L piston pumps provide adjustable vacuum for filtration, SPE, vacuum ovens, and more. These pumps are an efficient alternative to water…

For rebuild/repair of Welch small 4-head Chemical Duty Dry Membrane Vacuum Pumps, including Models MPC201T and MPC1010.  Contains 4 membranes, 8 valves, and affiliated O-Rings

Use Welch ProBoost in conjunction with a backing pump like the CRVpro to get deeper vacuum and higher flow. High Vacuum to 10 - 5 torr Use with high vacuum and Schlenk lines Employs air cooled diffusion pump Easy Attachment to backing pump Welch ProBoost is an air-cooled…

Oil free 115 or 230V versions Autoclavable receiver Standard oil-free station is an economical portable solution for aspirating or filtering. Unit will shut off automatically when 1.2 L collection receiver is full. All wetted parts are treated for corrosion protection from moisture.…

Aluminum Hose Adapter sits on NW16 Centering Ring Assembly, inlet/exhaust flange, with hinged clamp, to present a 3/8" hose barb to accept vacuum hose with 3/8" ID or if using hose clamps, 1/2" and 5/8" ID hose also

For use with Concentrators and Rotary Evaporators Fluorinated plastics used on all wetted parts Solvent resistant at boiling points under 100°C Portable System is powered by a 1/8 hp, corrosion-resistant, PTFE pump. All wettable parts, including the diaphragm and valves…