Will the resin filter element of the water purifier reduce the hardness?

Softening resin can indeed reduce the content of calcium and magnesium ions in water, most of which are exchanged with sodium ions and a few with potassium ions.

Of course, whether it is necessary to remove calcium and magnesium from drinking water is another matter. According to the national standard, all below 400ppm are normal.

If the small water quality processor is not designed with a regeneration device, the process of resin losing its exchange capacity is irreversible. Once saturated, it will fail.

The time of failure is related to the amount of treated water and the hardness of treated raw water.