DIN EN 12485-2010 人类饮用水处理用化学药品.碳酸钙,高钙石灰,煅烧过半的白云石,氧化镁及碳酸钙镁.试验方法.德文版本EN 12485-2010
Chemicals used for treatment of water intended for human consumption - Calcium carbonate, high-calcium lime, half-burnt dolomite, magnesium oxide and calcium magnesium carbonate - Test methods; German version EN 12485:2010