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Laboratory Fume Hoods — Ducted & Ductless Chemical Fume Hoods

Operator protection from toxic fumes, vapours and aerosols. ESCO fume hoods supplied and serviced by Saksham.

Our fume hoods

Ducted or ductless — which fume hood is right?

  • Ducted fume hoods (ESCO Frontier® Acela) exhaust contaminated air outside the building. They are the right choice for a wide range of chemicals, acids, solvents and heated digestions. A bypass design and optional VAV (variable air volume) control reduce HVAC energy cost.
  • Ductless fume hoods (ESCO Ascent™ Max) clean the air through activated-carbon and HEPA filters and return it to the room. There is no ductwork, so they suit labs where ducting is impractical and chemical use is known and moderate.

Both are tested for containment to ASHRAE 110 and EN 14175, with a face velocity of around 0.5 m/s.

Supporting your lab

Saksham reviews your chemical inventory, recommends the hood type and filter chemistry, and handles installation, face-velocity testing and AMC for fume hoods in pharma QC, university and industrial labs.

Frequently asked questions

What is the difference between a fume hood and a biosafety cabinet?

A fume hood protects the operator from chemical fumes by exhausting them, but it does not protect the sample. A biosafety cabinet uses HEPA filtration to protect operator, sample and environment from biological hazards. HEPA filters do not capture chemical vapours.

Is a ductless fume hood safe?

Yes, for the chemicals its carbon filter is rated for and with regular filter monitoring and replacement. For broad or unknown chemical use, a ducted fume hood is safer.

What face velocity should a fume hood have?

Typically 0.4–0.5 m/s (80–100 fpm). ESCO hoods are designed around 0.5 m/s and are containment-tested to ASHRAE 110 and EN 14175.

Related equipment & guides

Get a quote for laboratory fume hood

Tell us your application and we'll respond within one business day with a configured recommendation and price.

  • Authorised distributor since 1997
  • Installation, IQ/OQ & training included
  • Local spares, consumables & AMC