
High efficiency air filters (HEPA and ULPA). Classification, performance testing, marking.
STANDARD published on 15.11.1998
Designation standards: BS EN 1822-1:1998
Note: WITHDRAWN
Publication date standards: 15.11.1998
The number of pages: 16
Approximate weight : 48 g (0.11 lbs)
Country: British technical standard
Category: Technical standards BS