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Negative Pressure Respirators Power Assisted Devices Compressed Air-Line Devices Self Compressed Air Devices Key EN 149 Filtering half-masks (single use) for protection against particulates. There are three protection classes: FFP1, FFP2 and FFP3. EN 405 Filtering half-masks with valves for protection against gases or against gases and particulates. EN 140 Half and quarter masks, reusable, for use with filters and respiratory protection devices (SCBA with compressed supplied air, assisted ventilation, etc). EN 136 Full-face masks, for use with filters and respiratory devices (SCBA and compressed air-line devices, powered assisted devices, etc). EN 148 Face pieces connector threading requirements. This standard describes the different types of PPE connections and respirator filters. The most commonly used is standard EN148-1, which defines RD40 x 1/7” threading. EN 143 Particulate filters for negative pressure respiratory devices. They are effective against dust and fibres, and most types of smoke, liquid aerosols and bacteria. Suitable for half-masks in compliance with EN140 or full- face masks EN136. There are three classes: • P1: Low efficiency • P2: Medium efficiency • P3: High efficiency EN 12941 (e.g. EN 146) Powered assisted filtering devices incorporating helmets or hoods against particulates, gases and vapours. There are threeclasses for all the equipment: TH1, TH2, TH3.The particulate filtering cartridges are marked: TH1P, TH2P, TH3P EN 12942 (e.g. EN147) Continuous flow compressed air-line breathing apparatus. Four light duty categories: 1A, 2A, 3A, 4A, four heavy duty categories: 1B, 2B, 3B, 4B. EN 1835 Powered assisted filtering devices incorporating helmets or hoods against particulates, gases and vapours. There are threeclasses for all the equipment: TH1, TH2, TH3.The particulate filtering cartridges are marked: TH1P, TH2P, TH3P EN 12419 Continuous flow compressed air-line breathing apparatus. Four light duty categories: 1A, 2A, 3A, 4A, four heavy duty categories: 1B, 2B, 3B, 4B. EN 270 Powered assisted filtering devices incorporating helmets or hoods against particulates, gases and vapours. There are threeclasses for all the equipment: TH1, TH2, TH3.The particulate filtering cartridges are marked: TH1P, TH2P, TH3P EN 137 Self-contained open-circuit compressed air breathing apparatus. EN 145 Self-contained close-circuit breathing apparatus compressed oxygen or compressed oxygen-nitrogen type. EN 1146 Self-contained open-circuit compressed air breathing apparatus incorporating hoods.TH1P, TH2P, TH3P EN 402 Self-contained open-circuit compressed. EN 141 or EN 14387 Gas/vapour filters and combined filters for respiratory devices with negative pressure. They are or classified according to their type and class. There are three classes that EN 14387 correspond to a difference in the filter capacity and a maximum concentration of the toxic substance authorised in the polluted air. • Class 1: 0.1% • Class 2: 0.5% • Class 3: 1%. Legislation and Standards To conform with European legislation, all respiratory protection that is supplied as Personal Protective Equipment must comply with the Personal Protective Equipment Directive [implemented into UK law by The Personal Protective Equipment (EC Directive) Regulations 1992] and be CE marked on the hearing protection, or on the packaging when this is not practical. Standards TOWER Respiratory Information 36 Making the difference FFP2 FFP3 FFP1 FFP2 Unvalved FFP2 Carbon Valved FFP3 FFP1 Half Mask FFP2 Full Mask