ASTM-D5128 Standard Test Method for On-Line pH Measurement of Water of Low Conductivity

ASTM-D5128 - 2014 R22 EDITION - CURRENT
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Standard Test Method for On-Line pH Measurement of Water of Low Conductivity
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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.

Keywords

high purity; low conductivity; on-line; pH; ICS Number Code 71.040.50 (Physicochemical methods of analysis)

To find similar documents by ASTM Volume:

11.01 (Water (I))

To find similar documents by classification:

71.040.50 (Physicochemical methods of analysis Including spectrophotometric and chromatographic analysis)

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Document Number

ASTM-D5128-14R22

Revision Level

2014 R22 EDITION

Status

Current

Modification Type

Editorially changed

Publication Date

Dec. 8, 2022

Document Type

Test Method

Page Count

11 pages

Committee Number

D19.03