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ASTM D 1293 : 2018 : REDLINE

Current
Current

The latest, up-to-date edition.

Standard Test Methods for pH of Water
Available format(s)

PDF

Language(s)

English

Published date

01-15-2018

CONTAINED IN VOL. 11.01, 2018 Describes the determination of pH by electrometric measurement using the glass electrode as the sensor.

1.1These test methods cover the determination of pH by electrometric measurement using the glass electrode as the sensor. Two test methods are given as follows:

Sections

Test Method A—Precise Laboratory Measurement

8 to 15

Test Method B—Routine or Continuous Measurement

16 to 24

1.2Test Method A covers the precise measurement of pH in water utilizing at least two of seven standard reference buffer solutions for instrument standardization.

1.3Test Method B covers the routine measurement of pH in water and is especially useful for continuous monitoring. Two buffers are used to standardize the instrument under controlled parameters, but the conditions are somewhat less restrictive than those in Test Method A. For on-line measurement, also see Test Method D6569 which provides more detail.

1.4Both test methods are based on the pH scale established by NIST (formerly NBS) Standard Reference Materials.2

1.5Neither test method is considered to be adequate for measurement of pH in water whose conductivity is less than about 5 μS/cm. Refer to Test Methods D5128 and D5464.

1.6Precision and bias data were obtained using buffer solutions only. It is the user's responsibility to assure the validity of these test methods for untested types of water.

1.7The values stated in SI units are to be regarded as standard. The values given in parentheses are mathematical conversions to inch-pound units that are provided for information only and are not considered standard.

1.8This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

1.9This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Committee
D 19
DocumentType
Redline
Pages
13
PublisherName
American Society for Testing and Materials
Status
Current

ASTM D 1129 : 2013 : REDLINE Standard Terminology Relating to Water
ASTM D 2777 : 2013 : REDLINE Standard Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
ASTM E 70 TEST METHOD FOR PH OF AQUEOUS SOLUTIONS WITH THE GLASS ELECTRODE
ASTM D 5128 : 2014 : REDLINE Standard Test Method for On-Line pH Measurement of Water of Low Conductivity
ASTM D 5464 : 2016 : REDLINE Standard Test Method for pH Measurement of Water of Low Conductivity
ASTM D 1067 : 2016 : REDLINE Standard Test Methods for Acidity or Alkalinity of Water
ASTM D 6569 : 2014 : REDLINE Standard Test Method for On-Line Measurement of pH (Withdrawn 2023)

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