Guides

The complete guide to international respirator standards: how NIOSH 42 CFR 84, EN 149, CSA Z94.4, AS/NZS 1716, NOM-116-STPS, and the UK's HSE rules compare, which classes are equivalent across borders, and what to buy in each market. Includes the master N95/FFP2/P2/KN95 equivalence table, protection factors, and buying guidance.

Respiratory protection covers every decision between a worker and a harmful airborne exposure: selecting the right respirator, applying OSHA's APF table, completing fit testing, choosing the right cartridge, and building a compliant written program. This guide covers all of it — from NIOSH 42 CFR Part 84 to OSHA 1910.134.