PDF-Water hardness

Author : tatiana-dople | Published Date : 2015-08-04

The hardness of water is due to the presence of calcium and magnesium minerals that are naturally present in the water The usual signs of a hard water supply are

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"Water hardness"The content belongs to its owner. You may download and print it for personal use, without modification, and keep all copyright notices. By downloading, you agree to these terms.