VISOCOLOR ECO carbonate hardness


VISOCOLOR® ECO Carbonate hardness
Titrimetric determination of carbonate hardness
	The determination is preformed as titration with hydrochloric acid against a mixed indicator, which changes colour at pH 4.5. (Reaction basis according to, DIN EN ISO 9963-1 C24)
Data and ordering information
REF	931 014
Type	titration test
Range	1 drop = 1 °d
Sufficient for	about 100 tests with an average hardness of 10 °d
Shelf life	at least 2 years
Sea water suitability	yes
Detectable with PF-12	no

Carbonate hardness is that portion of calcium and magnesium ions which are present as carbonate or hydrogen carbonate. Normally the carbonate hardness is smaller than the total hardness. If the carbonate hardness is larger than the total hardness, you should trace the origin of this abnormal conditions, e. g. discharge of alkali hydrogen carbonates or high buffer capacity.