
High efficiency air filters (HEPA and ULPA) - Part 1: Classification, performance testing, marking
STANDARD published on 1.8.1998
Designation standards: ÖNORM EN 1822-1
Note: WITHDRAWN
Publication date standards: 1.8.1998
The number of pages: 18
Approximate weight : 54 g (0.12 lbs)
Country: Austrian technische Norm
Category: Technical standards ÖNORM