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ASTM International - ASTM D5128-90(2005)

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

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Organization: ASTM International
Publication Date: 1 January 2005
Status: inactive
Page Count: 11
ICS Code (Physicochemical methods of analysis): 71.040.50
significance And Use:

pH measurements are typically made in solutions that contain relatively large amounts of acid, base, or dissolved salts. Under these conditions, pH determinations may be made quickly and... View More

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.

Document History

January 1, 2014
Standard Test Method for On-Line pH Measurement of Water of Low Conductivity
1.1 This test method covers the precise on-line determination of pH in water samples of conductivity lower than 100 μS/cm (see Table 1 and Table 2) over the pH range of 3 to 11 (see Fig. 1), under...
October 1, 2009
Standard Test Method for On-Line pH Measurement of Water of Low Conductivity
1.1 This test method covers the precise on-line determination of pH in water samples of conductivity lower than 100 μS/cm (see Table 1 and Table 2) over the pH range of 3 to 11 (see Fig. 1), under...
ASTM D5128-90(2005)
January 1, 2005
Standard Test Method for On-Line pH Measurement of Water of Low Conductivity
pH measurements are typically made in solutions that contain relatively large amounts of acid, base, or dissolved salts. Under these conditions, pH determinations may be made quickly and precisely....
June 10, 1999
Standard Test Method for On-Line pH Measurement of Water of Low Conductivity
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...
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