
Air filters for general ventilation - Part 4: Conditioning method to determine the minimum fractional test efficiency (ISO 16890-4:2022)
NORMA vydána dne 19.4.2023
Designation standards: UNE-EN ISO 16890-4:2023
Publication date standards: 19.4.2023
The number of pages: 21
Approximate weight : 63 g (0.14 lbs)
Country: Spanish technical standard
Kategorie: Technické normy UNE