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Laboratory fume cupboards - Part 4: Method for determination of the containment value of a laboratory fume cupboard

Executive summary

Method for the assessment of contamination efficiency of general purpose laboratory fume cupboards.


This British Standard, a part of the BS 7258 series, describes a method for the assessment of the containment efficiency of general purpose laboratory fume cupboards. This standard is applicable to fume cupboards covered by BS 7258. It is not intended for application to special purpose fume cupboards as detailed in BS 7258-1:1994. It does not apply to the testing of microbiological safety cabinets for which reference should be made to BS 5726.

The test procedure is intended for use in type testing in a standardized test room but may also be applied to the determination of the containment of an installed fume cupboard under on site conditions.

History and related standards

This British Standard supersedes DD 191:1990 which is withdrawn.

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