ASTM E 70 : 2007 : R2015

Name: ASTM E 70 : 2007 : R2015
Brand: ASTM
Price: 122.77 AUD

Superseded

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Standard Test Method for pH of Aqueous Solutions With the Glass Electrode

Available format(s)

Hardcopy , PDF

Superseded date

15-01-2024

Language(s)

English

Published date

01-06-2015

Publisher

American Society for Testing and Materials

This test method specifies the apparatus and procedures for the electrometric measurement of pH values of aqueous solutions with the glass electrode.

1.1This test method specifies the apparatus and procedures for the electrometric measurement of pH values of aqueous solutions with the glass electrode. It does not deal with the manner in which the solutions are prepared. pH measurements of good precision can be made in aqueous solutions containing high concentrations of electrolytes or water-soluble organic compounds, or both. It should be understood, however, that pH measurements in such solutions are only a semiquantitative indication of hydrogen ion concentration or activity. The measured pH will yield an accurate result for these quantities only when the composition of the medium matches approximately that of the standard reference solutions. In general, this test method will not give an accurate measure of hydrogen ion activity unless the pH lies between 2 and 12 and the concentration of neither electrolytes nor nonelectrolytes exceeds 0.1 mol/L (M).

1.2The values stated in SI units are to be regarded as standard. The values in parentheses are for information only.

1.3This 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.

Committee	D 16
DocumentType	Test Method
Pages	6
ProductNote	Reconfirmed 2015
PublisherName	American Society for Testing and Materials
Status	Superseded
SupersededBy	ASTM E 70 : 2019
Supersedes	ASTM E 70 ASTM E 70 : 2007

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