DIN EN 898:2012-04

Отменен

Chemicals used for treatment of water intended for human consumption - Sodium hydrogen carbonate; German version FprEN 898:2012

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DIN EN 898:2013-02

Действует

Chemicals used for treatment of water intended for human consumption - Sodium hydrogen carbonate — 20 стр.

DIN 19643-2:1997-04

Отменен

Treatment of water of swimming-pools and baths - Part 2: Combination of process: Adsorption, flocculation, filtration, chlorination — 6 стр.

DIN 19643-3:1997-04

Отменен

Treatment of water of swimming-pools and baths - Part 3: Combination of process: Flocculation, filtration, ozonization, absorbing filtration, chlorination — 7 стр.