Calcium-Selective Electrode with Liquid Ion Exchanger

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Science  09 Jun 1967:
Vol. 156, Issue 3780, pp. 1378-1379
DOI: 10.1126/science.156.3780.1378


A simple calcium-selective electrode has been developed which is capable of measuring calcium ion activity in the presence of many common interfering ions. The electrode utilizes a liquid ion exchanger membrane containing the calcium salt of a disubstituted phosphoric acid.

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