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.
General methods of test for pigments and extenders - Part 11: Determination of tamped volume and apparent density after tamping (ISO 787-11:1981); German version EN ISO 787-11:1995— 5 стр.
