Welch

Compare Tool

Select up to 3 products

1 - 27 of 27
Sort
View
Show
  • Standard Duty Dry Vacuum Pump

    Welch

    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…

  • Model 2019 vacuum pump

    Welch

    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…

  • DryFast Diaphragm Vacuum Pumps

    Welch

    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…

  • Dry Ice Trap 1/2' Inlet / Outlet

    Welch

    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…

  • Portable 12 VDC Motor Vacuum Pumps

    Welch

    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…

  • Direct Drive Vacuum Pumps

    Welch

    Compact, convenient Deep vacuum Use these Welch 2-stage direct drive pumps for a wide range of laboratory applications to provide deep vacuum down to 1 x 10-4 torr. Common lab processes include freeze drying, vacuum oven drying, glove box vacuum, centrifugal concentrator operation, and…

  • DuoSeal® High Vacuum Pumps

    Welch

    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,…

  • Aspiration/Pressure Transfer Stations

    Welch

    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.…

  • Freeze Dryer Vacuum System

    Welch

    Direct drive Large oil capacity Resists chemical attack This direct-drive freeze dryer vacuum system is designed to handle the harsh chemical mixtures - TFA, TFA by-products, acetonitrile, and/or HBr - removed during sample drying. Oil is continuously filtered and these acids are…

  • Chemstar Vacuum Pumps

    Welch

    High contamination tolerance Vital parts corrosion resistant Reduced frictional wear Nitrogen purge standard Easy attachment of accessories Recommended for use with gases such as HCl, HBr, Br2, Cl2, O3, HOAC,…

  • Utility Vacuum Pumps

    Welch

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

  • DryFast Collegiate PTFE Vacuum Pumps

    Welch

    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…

  • DirecTorr Gold Pump Oil

    Welch

    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…

  • Model 1640 Vacuum Controller

    Welch

    The compact Model 1640 Vacuum Controller regulates you’re the vacuum level of your application - precisely, conveniently, and without using precious bench space. Vacuum level can be regulated from 2 Torr to atmospheric pressure, ±1 Torr. Use Model 1640 for fine control of rotary…

  • Cell Culture Aspiration Stations

    Welch

    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…

  • On/Off Foot Switches

    Welch

    Maintained or momentary operation Hands-free operation Plugs directly into power source No adapters or special connections On/Off foot switches are compatible with selected dry vacuum pump models. Switches handle up to 15 amps. 1233K59 and 1233K60 comes with a 3-prong U.S.…

  • Self-Cleaning Dry Vacuum System

    Welch

    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 are…

  • Exhaust Filters

    Welch

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

  • ChemStar Dry - Oil-Free Deep Vacuum System

    Welch

    Eliminate cold-trapping, messy oil maintenance, and the threat of oil contamination to your sample. Handle even high chemical vapor loads for simple, efficient deep vacuum. ChemStar Dry excels where no dry vacuum pump has before – the first practical alternative to oil-seal rotary vane pumps.…

  • High Capacity PTFE Diaphragm Vacuum Pumps

    Welch

    Powerful vacuum for low temperature processing Economical, oil-free, ecologically sound Excellent solvent / acid resistance Use these durable dry diaphragm pumps to provide high flow, deep vacuum for your application. Welch Model 2052 pumps resist corrosive and solvent fumes to…

  • Accessories For Duo Seal Pumps

    Welch

    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.

  • Duoseal Explosion Proof Vacuum Pumps

    Welch

    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.

  • GEM Direct Drive Gear Pump

    Welch

    Rugged GEM direct drive gear pumps provide versatile vacuum for applications requiring a broad range of vacuum level operating conditions. GEM pumps can operate continuously in the pressure range that rotary vane pumps can not: 10 torr up to atmospheric pressure; oil recycler 1416B is recommended…

  • Thermocouple Vacuum Gage

    Welch

    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.

  • Vacuum Regulator w / Gauge

    Welch

    Pump mounted vacuum regulator connects to the pump intake for easy regulation of vacuum level. Includes an easy to read dial. Regulator features all stainless steel construction.

  • Gelmaster Gel Dryer Vacuum System

    Welch

    Efficient, two-pump vacuum system for use with gel dryers Dries fast without cracking or distortion Eliminates need for cold traps High condensed vapor capicity Cooling fan: 218 CFM Consists of a room temperature vapor pump and trap to condense and remove hot vapors and…

  • Oil Mist Eliminator

    Welch

    For all Welch Direct Drive Pumps

Compare Tool

Select up to 3 products

Please Log In

Don't have an Account? Create one now.