The CleanSpace CST ABEK1 P3 P SL R Combined Filter is suitable for protection aagainst airborne particulate (dust, mists and fumes), organic, inorganic gases or vapours, solvents, ammonia and sulphur dioxide (boiling point >65C).IMPORTANT: The filters are compatible with latest model CleanSpace ULTRA and CleanSpace PRO PAPR Power Units. When selecting a CleanSpace Filter please consult a Health and Safety specialist for advice on the appropriate respiratory equipment and filter use. Used with the revolutionary CleanSpace ULTRA and PRO PAPR: light weight, no hoses or belts Suitable for protection against airborne particulate (dust, mists and fumes organic, inorganic gases or vapours, ammonia and sulphur dioxide (boiling point >65C) Materials: Fibreglass particulate media and plastic casing, silicone seal Easy and quickly fitted and removed from the power unit