Practical guides to the standards behind the equipment we sell — what the markings mean, how the ratings are tested, and how to match a product to the hazard in front of you. Every figure on these pages is sourced from the standards bodies and manufacturers, and we leave out anything we could not verify.
- ANSI Z87.1 Safety Glasses Markings Explained
Decode ANSI Z87.1 safety eyewear markings: Z87 vs Z87+, D3, D4 and D5 codes, U, R, L and W scale numbers, and when to choose goggles or a face shield. - ANSI/ISEA 105 Cut Levels Explained (A1-A9)
What ANSI/ISEA 105 cut levels A1-A9 mean in grams, how TDM cut testing works, how they compare to the old 0-5 scale and EN 388, and how to pick a level. - ANSI/ISEA 107 High-Visibility Classes Explained
Class 1, 2 or 3? Compare ANSI/ISEA 107 Type O, R and P hi-vis garments, the square inches each class requires, and what the FHWA worker rule mandates. - Fire Extinguisher Classes and Ratings Explained
What does 2A:10B:C mean? Learn fire extinguisher Classes A, B, C, D and K, what the numbers measure, and how NFPA 10 governs selection, placement and service. - Understanding NRR: How to Choose Hearing Protection
Learn what the NRR means, how OSHA's derating method works, and how to match earplugs, earmuffs or dual protection to a measured noise level on the job. - NIOSH Respirator Filter Classes: N95, R95, P100 and Beyond
What N, R and P mean, how the 95/99/100 efficiency ratings work, plus cartridge color codes and the OSHA fit testing rules that come with respirator use. - Choosing the Right Sorbent: Universal, Oil-Only and HazMat
Universal, oil-only and hazmat sorbents compared: what each one absorbs, what it must never touch, pads vs socks vs booms, and how to size a spill kit. - Lockout/Tagout Basics: What OSHA 1910.147 Requires
A plain-language guide to OSHA 1910.147: energy control programs, lockout vs tagout, employee roles, the lockout sequence, group lockout and inspections.
Reference
- Workplace Safety Glossary
60 defined terms, from ANSI Z87.1 to sorbent socks, each traced to an authoritative source.