What is being detected in a hardness test?

Document ID

Document ID TE1583

Version

Version 3.0

Status

Status Published

Published Date

Published Date 12/04/2018
Question
What is being detected in a hardness test?
Summary
What is being detected in a hardness test?
Answer
Hardness refers to specific minerals that consume soap and cause scaling. Hardness is comprised mostly of calcium (Ca) and magnesium (Mg). Hardness is expressed as CaCO3. Total hardness is equal to the sum of Ca and Mg. The amount of Ca hardness can be determined by subtracting Mg hardness from total hardness and vice-versa.

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