| 摘要 |
PROBLEM TO BE SOLVED: To provide a salinometer capable of quantitatively predicting regeneration timing of an ion exchange resin for efficiently regenerating the ion exchange resin. SOLUTION: This salinometer is provided with an ion exchange device having an ion exchange flow passage, in which a liquid possibly containing sodium ions at least and an H-type cation exchange resin desalting the sodium ions in the liquid are brought into contact with each other, a plurality of proton concentration detectors arranged in the middle of the ion exchange flow passage along the liquid flow direction, and a constant quantity flow circulating means keeping a flow rate of the liquid flowing through the ion exchange flow passage constant. |
