Using Soap to Test for Hard Water

Going Green with Lisa Bronner
Going Green with Lisa Bronner
73.6 هزار بار بازدید - 6 سال پیش - A simple test with true
A simple test with true soap can tell you if you have hard water. This is because true soap molecules react with the calcium and magnesium ions in hard water and form a whitish precipitate. This is what we call soap scum on bathroom surfaces.  

This test for hard water was something I used to see my dad do in our kitchen. At the time I had no idea what he was doing, other than squirting soap into a drinking glass, which seemed weird. Now I know he was testing to see if our water softener was working.

A true soap can tell you if you have hard water. This is because true soap molecules react with the calcium and magnesium ions in hard water and form a whitish precipitate. This is what we call soap scum on bathroom surfaces. Or, if you make up a batch of my All-Purpose Castile Spray using hard water, you’ll see a cloudy layer that settles to the bottom. This mineral fallout is not toxic but does lessen the cleaning ability of the spray. Not a huge deal, but it can be avoided by using some form of purified water.

The Test:
Fill a clear glass with tap water.
Squirt in some true soap, such as Dr. Bronner’s Pure Castile Liquid Soap. (A detergent wash/shower gel/cleanser won’t work here.)
If the soap turns cloudy as it enters the water, you have hard water. If the soap swirls around but stays pretty much clear, you don’t.

That’s the test. It’s not fancy. It’s a simple binary test and does not give you any details such as how hard, but at least you know if you have it or you don’t.

For more tips see my blog, Going Green with a Bronner Mom at https://www.lisabronner.com.
Shop Dr. Bronner’s products at https://shop.drbronner.com/.
6 سال پیش در تاریخ 1397/07/19 منتشر شده است.
73,603 بـار بازدید شده
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