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hard water

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hard water

[′härd ¦wȯd·ər]
(chemistry)
Water that contains certain salts, such as those of calcium or magnesium, which form insoluble deposits in boilers and form precipitates with soap.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

hard water

Water containing solutions of mineral salts (sulfates of calcium and magnesium, carbonates, and bicarbonates). Also see water softener.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
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References in periodicals archive
The team of researchers examined whether removing the calcium and magnesium ions using an ion-exchange water softener could mitigate the negative effects of hard water on the skin.
ppm, dGH, gpg etc., but most commonly it is expressed as equivalent of Calcium carbonate.8 Generally there are no harmful effects of hard water on one's health rather it has more useful effects as it acts as a good source of calcium and magnesium.9-13 According to United States Geological Survey (USGS) water is classified into four types (Table-1)
(2008) reported a higher rate of silver accumulation in the fish, Pimephales promelas, when the fish was previously acclimated to soft water, as compared to moderately hard water.
The Morton[R] System Saver[R] Water Softening is a viable and cost effective solution to eliminating hard water issues, and can be retrofitted into most homes.
The product is of a very high quality and is manufactured at the only facility in the UK offering a Sodium Hypochlorite product approved by the Drinking Water Inspectorate specifically for sanitisation use in hard water areas, marketed under the name TP-Chlor.
This hard water stable formula is effective in a wide range of light, moderate & heavy-duty applications, including machining, cutting, grinding, milling, broaching, threading and turning.
Q | The instruction booklet for my fishfinder says to clean the LCD screen with warm water and a soft cloth, but I have hard water I at my house and it always leaves spots behind.
Consumers purchasing a new GE Softener are provided with knowledge concerning hard water issues such as rust, helpful tips on preventing and removing rust stains and coupons to Summit Brand products like Super Iron Out.
Hard water has higher concentrations of dissolved minerals, such as calcium and magnesium.
But phosphates also soften hard water, and people using low-phosphate detergent in areas with hard water have reported more problems than people in areas with soft water, such as Eugene and Springfield.
COUNTRYSIDE: We too, live with a well in Arizona and have had problems with the hard water. We had no luck with the magnet system and recently installed a de-scaling unit.
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