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ASTM D5128

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

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Organization: ASTM
Publication Date: 1 January 2014
Status: active
Page Count: 12
ICS Code (Physicochemical methods of analysis): 71.040.50
scope:

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 field operating conditions. pH measurements of water of low conductivity are problematic for conventional pH electrodes, methods, and related measurement apparatus. 

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. For off-line pH measurements in low conductivity samples, refer to Test Method D5464. 

The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 

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

ASTM D5128
January 1, 2014
Standard Test Method for On-Line pH Measurement of Water of Low Conductivity
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 field...
October 1, 2009
Standard Test Method for On-Line pH Measurement of Water of Low Conductivity
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 field...
October 26, 1990
Standard Test Method for On-Line pH Measurement of Water of Low Conductivity
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 field...
October 26, 1990
Standard Test Method for On-Line pH Measurement of Water of Low Conductivity
1. Scope 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),...

References

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