Treatment of water of swimming pools and baths - Part 4: Combination of process: Flocculation, ozonisation, multilayer filtration, chlorination— 10 стр.
German standard methods for the examination of water, waste water and sludge; summary indices of actions and substances (group H); determination of acid and base capacity (H7)— 10 стр.
Chemicals used for treatment of water intended for human consumption - Aluminium chloride, aluminium chloride hydroxide and aluminium chloride hydroxide sulfate (monomeric); German version EN 881:1997— 7 стр.
German standard methods for the examination of water, waste water and sludge - Jointly determinable substances (group F) - Part 30: Determination of trihalogenmethanes in bathing water and pool water with headspace-gas chromatography (F 30)— 26 стр.
