Water Softeners Solve Hard Water Problems
The term "water hardness" originally referred to the ability of water to precipitate soap
and form soap scum.
Soap is precipitated (or brought to the "surface") by water
containing high levels of calcium and...
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Water Softeners Solve Hard Water Problems
The term "water hardness" originally referred to the ability of water to precipitate soap
and form soap scum.
Soap is precipitated (or brought to the "surface") by water
containing high levels of calcium and magnesium.
The "harder" the water the less soap
will dissolve in the water.
In current practice, total hardness is defined as the sum of the concentration of the
calcium and magnesium ions, expressed as calcium carbonate.
Hardness can be
expressed as calcium carbonate in either parts per million (the same as milligrams per
liter) or grains per gallon.
Since automatic water softeners are rated in grains of
hardness removal, this is the more common measurement used by U.
S.
consumers.
One grain of hardness equals approximately 17.
1 pm of calcium carbonate hardness.
Water hardness minerals are commonly treated with a saltless water softener system that
uses an ion-exchange resin and regenerates with salt.
For residential and commerci
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