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1. What is considered hard water and what are the degrees of hardness? Properly very arduous water can be 10.5 grains per gallon and a hundred and eighty parts per million and above. However it's worthwhile to realize that even reasonably arduous water of three.5 to 7 grains per gallon and 60-a hundred and twenty components per million will go away arduous water spots. Barely exhausting water corresponding to 1 to three.5 grains per gallon and 17.1 to 60 half per million will not go away noticeably exhausting water spots that you can't cure with a chamois. But actually as a professional auto detailer you're really looking for mushy water of lower than 1 grain per gallon and 17 elements per million. (mobilecardetailinglosangeles.com) 1 points by bellshake4 5 days ago | discuss

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