ASTM-D6569 › Standard Test Method for On-Line Measurement of pH
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1.1 This test method covers the continuous determination of pH of water by electrometric measurement using the glass, the antimony or the ion-selective field-effect transistor (ISFET) electrode as the sensor.
1.2 This test method does not cover measurement of samples with less than 100 μS/cm conductivity. Refer to Test Method D5128.
1.3 This test method does not cover laboratory or grab sample measurement of pH. Refer to Test Method D1293.
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
hydrogen ion; on-line; pH; process measurement; ICS Number Code 71.040.50 (Physicochemical methods of analysis)
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Feb. 15, 2014