Dr. Nitin K. Mandavgade
Ms. Shweta V. Matey
Dr. DN Raut
Dr. RR Lakhe
Abstract
Hardness of water refers to the excess quantity of calcium and magnesium ions present in the water sample. As water is consumed in the form of drinking water continuous intake of such water may lead to health related issues like kidney stone, diabetes, cardiovascular diseases and sometimes cancer. It is necessary to identify the amount of calcium and magnesium in drinking water in order to make it useful for drinking purpose. Water hardness testing is carried out in various NABL accredited testing laboratories to improve the quality of water. This paper deals with the measurement of uncertainty in water hardness testing methods. The performance of total hardness of water testing is affected by various factors like purity of CaCo3, molecular weight etc.Keywords- Quality of water, Hardness, Purity, CaCo3, Molecular Weight, Uncertainty of measurement.