Standard Historical Last Updated: Aug 16, 2017 Track Document
ASTM D5128-90(1999)e1

Standard Test Method for On-Line pH Measurement of Water of Low Conductivity

Standard Test Method for On-Line pH Measurement of Water of Low Conductivity D5128-90R99E01 ASTM|D5128-90R99E01|en-US Standard Test Method for On-Line pH Measurement of Water of Low Conductivity Standard new BOS Vol. 11.01 Committee D19
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Scope

1.1 This test method covers the precise on-line determination of pH in water samples of conductivity lower than 100 [mu]S/cm (see Tables 1 and 2) over the pH range of 3 to 11 (see Fig. 1), under field operating conditions, utilizing a sealed, non-refillable, reference electrode. pH measurements of water of low conductivity are problematical for conventional pH electrodes, methods, and related measurement apparatus.

1.2 This test method includes the procedures and equipment required for the continuous pH measurement of low conductivity water sample streams including the requirements for the control of sample stream pressure, flow rate, and temperature.

1.3 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.

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Details
Book of Standards Volume: 11.01
Developed by Subcommittee: D19.03
Pages: 11
DOI: 10.1520/D5128-90R99E01
ICS Code: 71.040.50