Products used for treatment of water intended for human consumption - Inorganic supporting and filtering materials - Definitions; Trilingual version EN 12901:1999— 9 стр.
Products used for treatment of water intended for human consumption - Inorganic supporting and filtering materials - Methods of test; German version EN 12902:2004— 36 стр.
Treatment of water of swimming pools and baths - Part 5: Combination of process: Flocculation, filtration, adsorption at granular activated carbon; chlorination— 9 стр.
