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Science 11 October 1968:
Vol. 162. no. 3850, pp. 267 - 268
DOI: 10.1126/science.162.3850.267
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Articles

Solid Ion-Exchange Electrode Selective for Calcium Ion

Franklin A. Schultz 1, Arne J. Petersen 1, Charles A. Mask 1, and Richard P. Buck 1

1 Beckman Instruments, Inc., 2500 Harbor Boulevard, Fullerton, California 92634

A calcium-selective electrode with solid ion exchanger was prepared from a solution of the calcium salt of a dialkylphosphoric acid in collodion. The electrode responds rapidly and reproducibly to activity of calcium ion and demonstrates a selective response for calcium ion in the presence of alkaline earth and alkali metal cations.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)