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Welch™ Gem™ Vacuum Pumps and Systems

Designed for rotary evaporations with high boiling point solvents

Manufacturer:  Welch™ 8890A70

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Catalog No. 01-129-1



Includes: Exhaust mist eliminator

Description

Description

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.

Order Info

Dimensions: 14.5L × 5.12W × 14.37 in. H (36.8 × 13 × 36.3cm). Net weight: 27.5 lb. (12.5kg). For 115V 60Hz.

Compliance

CSA approved

Specifications

Specifications

0.1 torr
115V
11.8kg
3450rpm
115V 60Hz
50dBA
11.1kg
Rotary evaporator
8.4 in.
14.5 in.
5.1 in.
0.25hp
26 lb.
Tubing, gauge, Model 1421 vacuum regulator, 1416B exhaust mist eliminator, plus the GEM pump to connect to a rotary evaporator
CSA
High-vacuum gear pump systems for rotary evaporators
24.5 lb.
31L/min.
60Hz
21.3cm
36.8cm
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