
Air filters for general ventilation - Part 4: Conditioning method to determine the minimum fractional test efficiency (ISO 16890-4:2022)
NORM herausgegeben am 15.2.2023
Designation standards: ÖNORM EN ISO 16890-4
Publication date standards: 15.2.2023
The number of pages: 22
Approximate weight : 66 g (0.15 lbs)
Country: Austrian technische Norm
Kategorie: Technische Normen ÖNORM