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ASTM D6851-20

Current Revision

Standard Test Method for Determination of Contact pH with Activated Carbon

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1.1 This method is to be used in the determination of the pH of water on initial contact with activated carbon. This test method is not meant as a replacement for Test Method D3838 and may give a different value.

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

1.3 This 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.


4.1 The determination of contact pH can be used as a simple and fast measurement that can allow activated carbon producers and users to have a standard method for assessing the effect various carbons will have on the initial pH of the water in contact with the carbon. It has been determined that there is a bias between this method and Test Method D3838; they are not equivalent.

SDO ASTM: ASTM International
Document Number D6851
Publication Date Jan. 15, 2020
Language en - English
Page Count 3
Revision Level 20
Supercedes
Committee D28.02
Publish Date Document Id Type View
Jan. 15, 2020 D6851-20 Revision
Oct. 1, 2007 D6851-02R07E01 Revision
Dec. 10, 2002 D6851-02 Revision
Oct. 1, 2024 D6851-20R24 Reaffirmation
Sept. 1, 2011 D6851-02R11 Reaffirmation
Oct. 1, 2007 D6851-02R07 Reaffirmation