NEN 6441 : 1979
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
WATER - DETERMINATION OF TOTAL HARDNESS AND CALCIUM AND MAGNESIUM CONTENT
01-04-2005
01-12-2013
Explains a titrimetric method to determine the total hardness and the content of calcium and magnesium ions in water. Applies to any kind of water with a total hardness of at least 5 micro mol/l (0,01 mg/l), a calcium content of at least 1 mg/l and a magnesium content of at least 1 mg/l. However this method is not suitable for waste water.
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