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The top documents tagged [hard water slide]
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Units for Measuring Water Quality PARTS PER MILLION Most dissolved substances found in water are measured in parts per million (ppm) or even smaller
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Water hardness pH PO 4 3- NO 2 -, NO 3 - NH 4 + Fe
230 views
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M.Morelli I.T.I. Malignani - Udine SOFT AND HARD WATER
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Topics for Today From Soap to Biodiesel!. Topics for Today Why biodiesel? How are soap and biodiesel different? No text readings
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Why are standard test methods important ? –Results are comparable between different labs –Results can be reproduced by other labs –Data can be compiled
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ELEMENTS are everywhere!. ELEMENT #1 The spiral pattern on this ancient Celtic ring represents the spiral / circle of life. What element is in this ring?
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1 of 6© Boardworks Ltd 2012 Hard Water. 2 of 6© Boardworks Ltd 2012 What is hard water? Hard water contains dissolved calcium and magnesium compounds
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