This document is applicable to silica sand and silica gravel used for treatment of water intended for human consumption. It describes the characteristics and specifies the requirements and the corresponding test methods for silica sand and silica gravel. It gives information on its use in water treatment.
DIN EN 12904:2005 history
2005DIN EN 12904:2005-06 Products used for treatment of water intended for human consumption - Silica sand and silica gravel; German version EN 12904:2005
2005DIN EN 12904:2005 Products used for treatment of water intended for human consumption - Silica sand and silica gravel; German version EN 12904:2005