Boiler Feedwater - an overview | ScienceDirect Topics
The production of high quality water for industrial use such as boiler feed water from surface water sources becomes increasingly difficult because of the high salt content of the raw water. For feed water salt concentration in excess of 200 ppm ion-exchange becomes quite costly and furthermore burdens the environmental with additional discharge of chemicals during the regeneration process.
the boiler water conductivity which shows the total content of soluble salts collected into the boiler from the feed water and the treatment. It is also equal to the specific gravity i.e. measurement of the total salt content may be done by a specific gravity meter.