1.14652

Total Hardness Test Kit, titrimetric

titrimetric, for use with MCOLORTEST^®

• UNSPSC Code: 41116116
• NACRES: NA.24

Properties

• product name: Total Hardness Test in freshwater, titrimetric, for use with MCOLORTEST^®
• specific analyte(s): calcium, magnesium
• Quality Level: 100
• compatibility: for use with MCOLORTEST^®
• detection method: titrimetric
• storage temp.: 15-25°C

Description

General description

Method: titrimetric with dropping bottle MColortest^®

The test measures the content of salts of the alkaline earth metals calcium, magnesium, strontium and barium in freshwater. For the determination the titrant is added dropwise to the sample until the added indicator changes its color.

This MQuant^® Total Hardness test (formally MColortest^®) is suitable for the titrimetric determination using a convenient dropping bottle.

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.

Legal Information

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

Safety Information

• Storage Class Code: 10 - Combustible liquids
• WGK: WGK 2