Buy respiratory protection online from the team member, a store specialising in personal protective equipment. Standards: EN136: full face masks Refers to resistance to temperature, impact, flame, thermal radiation, traction, cleaning and disinfection products. In addition, the visual inspection must bear the manufacturer's marking and information leaflet. EN140: half masks and quarter masks For resistance to impact, cleaning and disinfection products, temperature, flame and respiratory resistance. EN141: Gas filters and combined filters Resistance to impact, temperature, humidity, corrosive environments and mechanical and respiratory resistance. EN143: particle filters Refers to resistance to impact, temperature, humidity, corrosive environments and mechanical and respiratory resistance. EN149: half-mask filters For resistance to impact, cleaning and disinfection products, temperature, flame and respiratory resistance. EN405: filter half masks with valves and gas filters or combined filters Resistance to handling, wear, impact, flame and respiratory resistance Identify the type of risk: dust, aerosols, smoke or gas Identify the toxic product Identify and record its toxicity (concentration) Compare with the TWA/WAY Determine the type of filters : A, B, C, C, K and its class 1, 2, 3 This approach must take into account the environment of the exposed workstation (humidity, temperature,...) Masks for short use: Identify the type of risk : dust, fumes,... Identify the toxic product Identify and record the toxicity (concentration) Compare with the Average Exposure Value (AEL) Compare with the Exposure Limit Value (ELV) Determine the type of filter (P1, P2 or P3) Classification of filters: Class % minimum efficiency FFP1 78% FFP2 92% FFP3 98% A FFP3 mask will stop 98% of particles.