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Stop Waiting on Vacuum Performance

If you're running rotary evaporation, filtration, or vacuum drying and still relying on oil-sealed pumps, you're losing time to maintenance and contamination. Welch’s DryFast and DryFast Ultra diaphragm pumps are engineered to deliver fast, clean vacuum without oil—cutting downtime and solvent cleanup.

DryFast Ultra adds a chemical-resistant PTFE flow path and higher flow rates for aggressive solvents and larger volumes. Both models are compact, quiet, and built for lab workflows that demand reliability.

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Key Features

DryFast

  • Flow rate: 35 L/min
  • Ultimate vacuum: 75 Torr
  • Ideal for: Rotary evaporation, filtration, vacuum drying
  • Compact footprint, low noise
  • Oil-free operation = zero contamination risk

DryFast Ultra

  • Flow rate: 65 L/min
  • Ultimate vacuum: 35 Torr
  • PTFE flow path for chemical resistance
  • Handles aggressive solvents like TFA, DCM, and acetonitrile
  • Faster evaporation for high-throughput labs

FAQs

DryFast Ultra is designed for aggressive solvents including acetonitrile, dichloromethane (DCM), trifluoroacetic acid (TFA), and others commonly used in organic synthesis and sample prep.