What does softening insert mean in practice?
A small portion of sodium resin exchanges calcium and magnesium until its limited capacity is exhausted.
When does it matter?
In hard water, the cartridge may wear out after a small volume, and without regeneration, the hardness returns unnoticeably.
Which solutions are related to it?
The capacity is calculated from the hardness and amount of resin, regularly performs an output test and is replaced or regenerated according to the design.