1.10046

Total Hardness Test

colorimetric, water hardness 5-25 °d, water hardness 6-31 °e, for use with MQuant^® StripScan App, water hardness 9-45 °f, MQuant^®

• Synonym(s): Total Hardness chemical test strips
• UNSPSC Code: 41116116
• NACRES: NA.24

Properties

• description: semi-quantitative
• Quality Level: 100
• product line: MQuant^®
• specific analyte(s): calcium, magnesium
• water hardness measuring range: 5-25 °d; 6-31 °e; 9-45 °f
• compatibility: for use with MQuant^® StripScan App
• detection method: colorimetric
• storage temp.: 15-25°C

Description

General description

Method: Colorimetric, with test strips, >5 - >10 - >15 - >20 - >25°d, >6 - >13 - >19 - >25 - >31°e, >9 - >18 - >27 - >36 - >45°f, MQuant^®

The MQuant^® total hardness test strips can be used to measure water hardness. The hardness (total hardness) of a given water is due to its content of salts of the alkaline earth metals calcium, magnesium, strontium, and barium (“hardening constituents”, later compounds only in traces). In the presence of a green indicator the hardness ions Ca²⁺ und Mg²⁺ react with Titriplex^® III to form a colorless, stable complex. The hardness ions that are present in excess relative to Titriplex^® III react with the indicator to form a red complex. The reaction zones of the test strip, which are impregnated with differing amounts of Titriplex^® III, thus assume a green to red color, depending on the hardness of the water sample. The hardness is measured semi-quantitatively by visual comparison of the reaction zones with the color rows of a color scale. For other sensitivities and graduations please consider the other MQuant^® tests as well as our Reflectoquant^® and Spectroquant^® portfolio.

Linkage

Replaces: 10046-1; 10046

Legal Information

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

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

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

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

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 1