Total Hardness Test

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.

Design for sustainability benefits:

We continue to demonstrate our commitment to our planet and a sustainable future by exploring ways to improve existing products in our portfolio. We have recently reviewed the current line of MQuant^® test strips to identify key opportunities to minimize impact without compromising on the product performance.This product has benefited from:

• Test strip with reduction
• Recycled aluminum tube
• Digital instruction leaflet

Learn more about the initiative: Small Changes to Test Strips for Big Impact.

Replaces: 10046-1; 10046

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