TR-3712E - Particulate (P) filter for protection against dusts, mists, fumes and other particulate hazards TR-3802E - Particulate (P) filter for protection against dusts, mists, fumes and other particulate hazards + nuisance level Organic Vapours (concentrations below the occupational exposure limit) TR-3822E - Particulate (P) filter for protection against dusts, mists, fumes and other particulate hazards + nuisance level Acid Gases (concentrations below the occupational exposure limit). Protection against Hydrogen Fluoride up to 10 x Threshold Limit Value CE approved to EN 12941 (TH2 or TH3 depending upon headtop combination) For use 3M TR-300+ Powered Air Respirator Suggested Applications