3M 9922 Particulate Respirator Provides relief from nuisance levels of organic vapours and respiratory protection against moderate levels of fine dusts and mists Additional Information, Reliable, effective protection against fine particulates, Activated carbon layer offers relief from the irritation of low levels of organic vapours, often present alongside particulate hazards e.g. solvents, degreasers and resins, Up to 10 x WEL against respiratory hazards generated during welding such as welding fume and ozone gas, Durable collapse resistant inner shell, Good fit over a wide range of face sizes provided by convex shape, nose clip and twin-strap design, Comfortable, lightweight off-the-face design, 3M Cool Flow Valve reduces heat build-up to offer comfortable protection, particularly in hot and humid conditions, Blue colour coded straps denote FFP2 protection level, Standard: EN149:2001 FFP2, Approval: CE Marked, Maximum use concentration: Particulates: 10 x WEL and below WEL for organic vapours.