$1.00
FOR DETERMINATION OF
Alkalinity
RANGE/SENSITIVITY
1 drop equals 1.25 °e
NUMBER OF TESTS
100
TEST METHOD
Visual Test Kits
MANUFACTURER
Macherey-Nagel
ORDER CODE
931014
Description
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.
Carbonate hardness is the 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 these abnormal conditions, e. g. discharge of alkali hydrogen carbonates or high buffer capacity.
