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Merck

1.08048

Carbonate Hardness Test

for use with MQUANT®

Synonym(s):

Carbonate Hardness Visual Test Kit

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About This Item

NACRES:
NA.24
UNSPSC Code:
41116116
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specific analyte(s)

carbonate, hydrogen carbonate

Quality Level

compatibility

for use with MQUANT®

detection method

titrimetric

storage temp.

15-25°C

General description

The MQuant® Carbonate Hardness test (formally MColortest®) uses a graduated syringe to determine carbonate hardness as a measure of the buffering capacity of water which can also be expressed as acid-binding capacity or total alkalinity.

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.

This test can be used in
  • Surface water, seawater
  • Drinking water and mineral water (after degassing)
  • Aquarium water, waters from aquaculture
  • Industrial water, process water
  • Boiler and boiler feed water, cooling water

Analysis Note

Application test: conforms

Legal Information

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


pictograms

FlameCorrosion

signalword

Warning

Hazard Classifications

Flam. Liq. 3 - Met. Corr. 1

Storage Class

3 - Flammable liquids

wgk

WGK 1



Certificates of Analysis (COA)

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