NA 119
DIN Standards Committee Water Practice
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DIN EN 12904
DIN EN 12904
Products used for treatment of water intended for human consumption - Sand and gravel; German version EN 12904:1999
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Produkte zur Aufbereitung von Wasser für den menschlichen Gebrauch - Sand und Kies; Deutsche Fassung EN 12904:1999
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NA 119-07-13 AA - Chemicals and plants for water treatment