Water is a very complex fluid. It contains a little bit of practically everything that it contacts; the air while falling as rain, the earth as it percolates into the ground, the piping as it is transported and all kinds of organic and inorganic matter it may contact in its series of uses. Dissolved minerals in the water that contain an electric charge are called ions. These ions can be either positive or negatively charged with electrons. The positive ions are called cations and the negative ions are called anions. It is these positive cations in the form of Ca, Mg, Fe and manganese that causes the hardness that is associated with water. Removal of these hardness ions via ion exchange is the process used for softening water.
The water with positive cations Ca, Mg causes two problems:
It can cause "scale" to form on the inside of pipes, water heaters, tea kettles and so on. The scale doesn't conduct heat well and it also reduces the flow through pipes. Eventually, pipes can become completely clogged.
It reacts with soap to form a sticky scum, and also reduces the soap's ability to lather. Since most of us like to wash with soap, hard water makes a bath or shower less productive.
A water softener is usually a less costly and most convenient solution.The media is ion exchange resin generally.
Lanlang supply potable water grade water softener filter media resin with WQA gold seal. It's safty enough.
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