
Test method for the viral filtration efficiency (VFE) of medical masks and materials—Test method using bacteriophage Phi-X 174 aerosol
NORMA vydaná dňa 31.12.2025
Designation standards: GB/T 46937-2025
Note: K dispozici od: leden 2027
Publication date standards: 31.12.2025
Country: Chinese technical standard
Kategória: Technické normy GB