What does water resistivity mean in practice?
In demineralization it is usually given in MΩ·cm as a convenient measure of the quality of water with very low conductivity.
When does it matter?
High resistivity does not confirm low TOC, particle count or microbial quality.
Which solutions are related to it?
It is monitored online after RO-DI and the process requirements are supplemented with organic, silica or microbiological measurements.