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EVALUATION OF CALCIUM SENSORS IN FRESH AND SALTWATER
Citation:
Ward, G. EVALUATION OF CALCIUM SENSORS IN FRESH AND SALTWATER. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/7-79/058 (NTIS PB299332), 1979.
Description:
The Orion Calcium Ion Electrode No. 93-20 was evaluated for suitability as a calcium ion sensor for monitoring or in-situ marine applications by testing for the following parameters: accuracy, precision, temperature dependence, short- and long-term stability, durability, sensitivity to fluctuations in light intensity and flow conditions, response time as a function of temperature and concentration, and variability between modules. The tests were performed at 10 degrees C and 25 degrees C in freshwater, synthetic seawater, and natural waters (35-, 20- and 5ppt salinity). A description of the sensor, theory of operation, and a summary of the test results are included.