Guides

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.

By Steven Eaton, WC Safety Editorial Updated: June 10, 2026 OSHA 29 CFR 1910.134 | NIOSH 42 CFR Part 84

Organic vapor cartridge vs multi-gas cartridge, explained: an OV cartridge covers solvent vapors only; a multi-gas cartridge adds acid gas, ammonia, and formaldehyde.

The definitive Honeywell North respirator cartridge hub: quick selection chart, cartridge-to-respirator compatibility matrix, contaminant chart, P100 vs chemical cartridge, direct-answer selection by hazard, full SKU entity profiles with spec tables and do-not-use warnings, a 3M cross-reference chart, replacement schedule, comparisons, and a 15-question FAQ with schema.