BS 7989:2001

This standard BS 7989:2001 Specification for recirculatory filtration fume cupboards is classified in these ICS categories:

• 91.140.30 Ventilation and air-conditioning systems
• 13.040.30 Workplace atmospheres

This British Standard specifies requirements for fume cupboards designed to recirculate air back to the room after filtering out specified pollutants. This British Standard does not specify requirements for fume cupboards of the type dealt with in BS 7258.

This British Standard is not applicable to recirculatory filtration fume cupboards of the following types:

• recirculatory filtration fume cupboards for work on radioactive materials;
• recirculatory filtration fume cupboards for work on microbiological agents;
• high thermal load recirculatory filtration fume cupboards;
• recirculatory filtration fume cupboards employing wet scrubbing systems.

This British Standard is not intended to apply to small enclosures intended only for applications such as weighing, in which the filter retention capacity is likely to be small.