Welch™ Gem™ Vacuum Pumps and Systems

Designed for rotary evaporations with high boiling point solvents

Manufacturer: Welch™ 8890A-75

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Catalog No. 01-129-2

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    Specifications

    Horsepower 0.25hp
    Voltage 115V
    Hertz 60Hz
    Height (English) 8.4 in.
    Height (Metric) 21.3cm
    Width (English) 5.1 in.
    Length (English) 14.5 in.
    Length (Metric) 36.8cm
    Shipping Weight (English) 26 lb.
    Shipping Weight (Metric) 11.8kg
    Includes Tubing, gauge, Model 1421 vacuum regulator, 1416B exhaust mist eliminator, plus the GEM pump to connect to a rotary evaporator
    Motor Speed 3450rpm
    Pressure 0.1 torr
    Certifications/Compliance CSA
    Flow Rate 31L/min.
    For Use With (Equipment) Rotary evaporator
    Electrical Requirements 115V 60Hz
    For Tube Size (English) 0.39 in.
    For Tube Size (Metric) 1cm
    Noise Level 50dBA
    Weight (English) 24.5 lb.
    Weight (Metric) 11.1kg

    Rugged gear pumping mechanism operates over a wide range of pressures. Efficiently pumps vapors without condensing them into the pump.

    • Effective evaporation for DMSO and other high boiling point solvents
    • Adjustable vacuum to prevent bumping
    • Gear pump mechanism is tolerant of vapors
    • Exhaust mist eliminator prevents oil loss
    • Free air displacement: 31L/min. (1.1cfm)
    • Ultimate vacuum: 0.1 torr
    • Oil capacity: 0.5 qt. (0.45L)
    • Accepts tubing: 10mm I.D.

  • Description & Specifications
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