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ASTM D 1293 : 2018

Current
Current

The latest, up-to-date edition.

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

Hardcopy , PDF

Language(s)

English

Published date

01-15-2018

1.1 These test methods cover 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
Test Method
Pages
10
PublisherName
American Society for Testing and Materials
Status
Current
Supersedes

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ASTM D 5128 : 2014 Standard Test Method for On-Line pH Measurement of Water of Low Conductivity
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ASTM D 3370 : 1995 : REV A : R2003 : EDT 1 Standard Practices for Sampling Water from Closed Conduits
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ASTM D 6569 : 2005 : R2009 Standard Test Method for On-Line Measurement of pH<sup>1</sup>
ASTM D 1067 : 2002 Standard Test Methods for Acidity or Alkalinity of Water
ASTM D 1129 : 2013 Standard Terminology Relating to Water
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ASTM D 2777 : 2012 Standard Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
ASTM D 1129 : 2013 : R2020 : EDT 2 Standard Terminology Relating to Water
ASTM D 1193 : 1977 : R1983 : EDT 1 Standard Specification for Reagent Water
ASTM D 5128 : 1990 : R2005 Standard Test Method for On-Line pH Measurement of Water of Low Conductivity
ASTM D 5464 : 2011 Standard Test Method for pH Measurement of Water of Low Conductivity
ASTM D 1129 : 2006 Standard Terminology Relating to Water
ASTM D 6569 : 2023 Standard Test Method for On-Line Measurement of pH
ASTM D 2777 : 2003 Standard Practice for Determination of Precision and Bias of Applicable Methods of Committee D-19 on Water
ASTM D 2777 : 2021 Standard Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
ASTM D 1066 : 2018 Standard Practice for Sampling Steam
ASTM D 3370 : 2010 Standard Practices for Sampling Water from Closed Conduits
ASTM D 2777 : 2013 Standard Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
ASTM D 1066 : 2006 Standard Practice for Sampling Steam
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ASTM D 2777 : 1998 Standard Practice for Determination of Precision and Bias of Applicable Methods of Committee D-19 on Water
ASTM D 1129 : 2013 : R2020 : EDT 1 Standard Terminology Relating to Water
ASTM D 3370 : 2008 Standard Practices for Sampling Water from Closed Conduits
ASTM D 1129 : 1999 : REV A Standard Terminology Relating to Water
ASTM D 1129 : 2006 : REV A Standard Terminology Relating to Water
ASTM D 1193 : 2006 : R2011 Standard Specification for Reagent Water
ASTM D 1129 : 2003 : REV A Standard Terminology Relating to Water
ASTM D 1129 : 2002 Standard Terminology Relating to Water
ASTM D 1066 : 1997 : R2001 Standard Practice for Sampling Steam
ASTM D 1193 : 1991 Standard Specification for Reagent Water
ASTM D 6569 : 2014 Standard Test Method for On-Line Measurement of pH (Withdrawn 2023)
ASTM D 1066 : 2011 Standard Practice for Sampling Steam
ASTM D 1129 : 2004 Standard Terminology Relating to Water
ASTM D 1067 : 2016 Standard Test Methods for Acidity or Alkalinity of Water
ASTM D 2777 : 2008 Standard Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
ASTM D 5128 : 1990 : R1999 : EDT 1 Standard Test Method for On-Line pH Measurement of Water of Low Conductivity
ASTM D 2777 : 2006 Standard Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
ASTM D 3370 : 2018 Standard Practices for Sampling Water from Flowing Process Streams
ASTM D 1129 : 2002 : REV A Standard Terminology Relating to Water
ASTM D 1067 : 1988 Standard Test Methods for Acidity or Alkalinity of Water
ASTM D 3370 : 1976 Standard Practices for Sampling Water
ASTM D 6569 : 2005 Standard Test Method for On-Line Measurement of pH<sup>1</sup>
ASTM D 1193 : 1970 Standard Specification For Reagent Water
ASTM D 1193 : 2006 Standard Specification for Reagent Water
ASTM D 3370 : 1995 : REV A : R1999 : EDT 1 Standard Practices for Sampling Water from Closed Conduits
ASTM D 5464 : 2007 Standard Test Method for pH Measurement of Water of Low Conductivity
ASTM D 1193 : 1999 Standard Specification for Reagent Water
ASTM D 1129 : 2010 Standard Terminology Relating to Water
ASTM D 5128 : 2014 : R2022 Standard Test Method for On-Line pH Measurement of Water of Low Conductivity
ASTM D 3370 : 2007 Standard Practices for Sampling Water from Closed Conduits
ASTM D 5128 : 2009 Standard Test Method for On-Line pH Measurement of Water of Low Conductivity
ASTM D 1129 : 2006 : REV A : EDT 1 Standard Terminology Relating to Water
ASTM D 1129 : 2001 Standard Terminology Relating to Water
ASTM D 1129 : 2004 : EDT 1 Standard Terminology Relating to Water
ASTM D 5464 : 1993 : R2001 Standard Test Methods for pH Measurement of Water of Low Conductivity
ASTM D 5464 : 2016 Standard Test Method for pH Measurement of Water of Low Conductivity
ASTM D 1193 : 2006 : R2018 Standard Specification for Reagent Water
ASTM D 2777 : 2008 : EDT 1 Standard Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
ASTM E 70 : 2024 Standard Test Method for pH of Aqueous Solutions With the Glass Electrode
ASTM D 6569 : 2000 Standard Test Method for On-Line Measurement of pH<sup>1</sup>
ASTM D 1067 : 2011 Standard Test Methods for Acidity or Alkalinity of Water
ASTM D 1067 : 1992 : R1996 Standard Test Methods for Acidity or Alkalinity of Water

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