WAC 296-307-618
Labeling of air-purifying respirator
filters, cartridges, and canisters.
Your responsibility:
To make sure employees, their supervisors, and program
administrators can easily check for the correct air-purifying
filters, cartridges, and canisters on respirators.
Exemption:
This section does NOT apply to filtering-facepiece respirators when used voluntarily. See WAC 296-307-598
for voluntary use requirements.