T/ZZB 2141-2021 Disposable KN95 protective mask
T/ZZB 2141-2021 Disposable KN95 protective mask
Basic Information
Scope
Main technical content: This document specifies the terms and definitions, basic requirements, technical requirements, test methods, inspection rules, marking, packaging, storage and transportation, and quality commitments of disposable KN95 protective masks (hereinafter referred to as "masks"). This document is applicable to disposable masks for protection against non-oily particulate matter (without a breathing valve). This document is not applicable to respiratory protective equipment for protection against harmful gases and vapors, nor to respiratory protective equipment for special industries such as oxygen-deficient environments, underwater operations, escape, firefighting, and medical use. It is also not applicable to respiratory protective equipment for infants and children under the age of 14.