Total Hardness Test Kit, titrimetric

Method: titrimetric with dropping bottle MColortest^®

The test measures the content of salts of the alkaline earth metals calcium, magnesium, strontium and barium in groundwater and surface water, drinking water, mineral water and boiler water.

This MQuant^® Total Hardness test (formally MColortest^®) is suitable for the titrimetric determination using a convenient dropping bottle. It can be used in:

• Groundwater, surface water, and seawater
• Waters from aquaculture
• Drinking water and mineral water
• Swimming-pool water
• Boiler water
• Industrial water

Method
Calcium and magnesium ions react with an indicator to form a red complex compound. The indicator is released from this compound by titration with a solution of ethylenedinitrilotetraacetic acid disodium salt dihydrate (Titriplex^® III). At the titration end-point the color changes to green. The total hardness is determined from the consumption of titration solution.

MCOLORTEST is a registered trademark of Merck KGaA, Darmstadt, Germany

MQUANT is a registered trademark of Merck KGaA, Darmstadt, Germany

Titriplex is a registered trademark of Merck KGaA, Darmstadt, Germany