What does hardness measurement mean in practice?
The titration test determines hardness from the number of drops to change color, while the laboratory can determine calcium and magnesium separately.
When does it matter?
Strips have limited resolution and may not show low residual hardness after the softener.
Which solutions are related to it?
The sample is taken after the flow has stabilized, the result is recorded with the unit and converted only using the appropriate factor.