Where protection from nuisance levels of dusts are desired, use type N95 (US) or type P1 (EN 143) dust masks.
For higher level protection use type OV/AG/P99 (US) or type ABEK-P2 (EU EN 143) respirator cartridges. Use
respirators and components tested and approved under appropriate government standards such as NIOSH (US) or
CEN (EU).