BS EN 1822-2:1998 High efficiency air filters (HEPA and ULPA). Aerosol production, measuring equipment, particle counting statistics (Withdrawn)
Publication Year
1998
Document Status
Withdrawn
Abstract
Applies to high efficiency particulate air filters and ultra low penetration air filters (HEPA and ULPA) used in the field of ventilation and air conditioning and for technical processes, e.g. for clean room technology or applications in the nuclear and pharmaceutical industry. A procedure is established for the determination of the efficiency on the basis of a particle counting method using a liquid test aerosol, and allows a standardised classification of these filters in terms of their efficiency. It describes the measuring instruments and aerosol generators used in the course of this testing. With regard to particle counting it specifies the statistical basis for the evaluation of counts with only small numbers of counted events.
Document History
Superseded by BS EN 1822-2:2009.
ISBN
0580298388
Publisher Information
British Standards Institution
With over 100 years of experience the British Standards Institute is recognised as the UK’s National standards body. Their committees work with the manufacturing and service industries, government, businesses and consumers to facilitate the production of British, European and International standards.
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