
HIGH EFFICIENCY AIR FILTERS (HEPA AND ULPA). PART 1: CLASSIFICATION, PERFORMANCE TESTING, MARKING
STANDARD published on 19.5.1999
Designation standards: UNE-EN 1822-1:1999
Note: WITHDRAWN
Publication date standards: 19.5.1999
The number of pages: 20
Approximate weight : 60 g (0.13 lbs)
Country: Spanish technical standard
Category: Technical standards UNE