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Search "Hard water"
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Hard water | |
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About 10 pages (3,122 words) in 5 products |
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Encyclopedia and Summary Information
 summary from source:
 Hard Water : Environmental Health Terms
174 words, approx. 1 pages That containing a high level of dissolved salts. These are derived from the sub-soil strata through which it has passed; limestone and dolomite are notable for producing hardness in water. The more salts the water contains the ‘harder’ the... summary from source:
Soft Water : Environmental Health Terms
49 words, approx. 1 pagesWater that is low in its content of calcium or magnesium bicarbonates and sulphates. Hardness of whichever cause is generally expressed as the equivalent of milligrams per litre of calcium carbonate (mg/l CaCO3). Water with less than 100 mg/l is... summary from source:
summary from source:
 Hard water Information
2,802 words, approx. 9 pages
Hard water is water that has a high mineral content (contrast with soft water). Hard water usually consists of calcium (Ca2+), magnesium (Mg2+) ions, and possibly other dissolved compounds such as bicarbonates and sulfates. Calcium usually enters the... 
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