http://hardsoftwater.com Hard and soft water provides information on water filter, softener and water purification or treatment systems Thu, 03 May 2018 00:37:34 +0000 en-US hourly 1 https://wordpress.org/?v=6.9 61943100 http://hardsoftwater.com/determination-of-hardness-of-water-by-edta-method/ http://hardsoftwater.com/determination-of-hardness-of-water-by-edta-method/#comments Wed, 18 Dec 2013 13:00:39 +0000 http://hardsoftwater.com/?p=72 Determination of hardness of water by EDTA method is one of the three main methods for determination of hardness of water. EDTA means Ethylenediaminetetraacetic acid. This EDTA reagent can be forming edta-metal complexes by the reaction with metal ions except …

]]> http://hardsoftwater.com/determination-of-hardness-of-water-by-edta-method/feed/ 8 72 http://hardsoftwater.com/determination-of-water-hardness/ http://hardsoftwater.com/determination-of-water-hardness/#comments Tue, 10 Dec 2013 09:13:15 +0000 http://hardsoftwater.com/?p=68 Theoretically water hardness means the concentrations of all the metallic cations except the cations of the alkali metals. All nonmetallic ions like Hydrogen ion are excluded from the definition. Normally in the largest part waters, all off the water hardness …

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