Before to Calculate the capacity of the Water Softener (softening) Plant, to choose how much water to be softened. In this case, 100M3 to be softened at 400 ppm of Feed Hardness to 5 ppm.

**How to Calculate the resin capacity?**

The Resin Exchange Capacity is mention into the product’s supplier Data Sheet*.

Normally cationic exchange capacity : 55/liter of [....]