Dust mask Guide

1. Check whether the dust mask is certified by the certification organization through the pass mark and the pass number.
2. Select a dust mask with suitable grade for the relevant work by considering the process and the place of work, the nature of the hazardous substance, and the content of the work.

[Restriction on use of dust mask]
In the case where harmful gases, radioactive dusts are generated, and the kind, concentration and oxygen concentration of environmentally harmful substances of which oxygen concentration is 18% or less, are unclear