Carbon Filters Direct Leading Supplier of Replacement Filters for Ductless Fume Cabinets
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DUCTLESS FUME CABINETS
- about the technology

Fume hoods and fume cupboards are intended to remove vapours, gases and dusts of toxic, flammable, corrosive or otherwise dangerous materials. They are one of the most important safety engineering devices in the workplace.

Carbon filtered fume hoods, (fume cabinets are the same) are normally used where exhaust to atmosphere is not necessary or possible. The decision to use a carbon filtered fume hood is often made when a laboratory is running out of fume cupboards space, or removal of vapours are required at the location of an experiment. Carbon Filtered Fume Hoods, are sometimes referred to as Ductless Fume Hoods or Recirculatory Filtration Hood.

These fume hoods can can also be fitted with HEPA filters or other "combination filters" - see manufacturers types.

SAFETY TIP 1
Recirculating or ductless filtered fume cupboards are not a direct replacement for a traditional externally ducted externally vented fume cupboard. For the simple reason that the carbon filter has a finite capacity, so this type of cabinet should be used for low volumes of vapours.

SAFETY TIP 2
Always wipe up spills and do not leave solvent soaked cloths in your cabinet.

SERVICE INTERVAL RECOMMENDATIONS
COSHH regulations, generally adopted Worldwide says:

"The minimum requirement is for inspection at intervals, "not exceeding 14 months", to verify that the equipment is performing to its design specification. Confirmation of this fact enables the original COSHH assessment to be confirmed and thus a further period of COSHH complience."

Many service organisations regard it as good practice to change the Carbon Filter at the same time.

SAFETY TIP 3
If anyone complains of headaches or tiredness in your laboratory, test your carbon filter immediately!

You may need to try a new filter from Carbon Filters Direct, offering you excellent absorption charateristics. If you use your cabinet for the correct applications and adopt good laboratory practices, your Carbon Filters Direct replacement carbon filters will give you long and effective service.

Choosing your filter: Please consider the procedures that are going to be carried out in your cabinet before selecting your filter type - see filter selection