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hard water |
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hard water Etymology: AS, heard + waeter water that contains certain cations, particularly calcium and magnesium, that precipitate with soap solutions. The term is generally applied to tap water, and the degree of hardness varies with the source and previous treatment. hard water Water with a high content of calcium and magnesium salts–eg, carbonates and sulfates, which may interfere with certain lab tests. See Mineral water, Spring water; Cf Soft water. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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WaterPOINT 870 is the first fully integrated field handheld system that provides an entire panel of key water quality tests, including measurements for pH, ORP, conductivity, free chlorine, total chlorine, monochloramine, ammonia, total dissolved solids, carbonate alkalinity, calcium hardness, Langelier saturation index, calcium, carbon dioxide, and temperature. |
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