Sigma-Aldrich Carbonate Hardness Test In

Specific Analyte(S)

carbonate, hydrogen carbonate

Quality Level

100

Compatibility

for use with MQUANT^®

Detection Method

titrimetric

Storage Temp.

15-25°C

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General Description

Carbonate hardness is a measure of the buffering capacity of water which can also be expressed as acid-binding capacity or total alkalinity. This MQuant^®Carbonate Hardness test (formally MColortest^®) is suitable for the titrimetric determination using a convenient dropping bottle.

Method
Hydrogen carbonate and carbonate ions are titrated with hydrochloric acid against a mixed indicator. At the titration end-point (at pH 4.3) the color changes to red. The carbonate hardness (acid capacity) is determined from the consumption of titration solution.Method: titrimetric with dropping bottle MQuant^®The Carbonate Hardness Test determines carbonate hardness as a measure of the buffering capacity of water which can also be expressed as acid-binding capacity or total alkalinity.

Analysis Note

Application test: conformsMCOLORTEST is a registered trademark of Merck KGaA, Darmstadt, GermanyMQUANT is a registered trademark of Merck KGaA, Darmstadt, GermanyGHS05H290P234 - P390