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ASTM D6020-00(2020)

Current Reaffirmation

Standard Practice for Calculation of (Non-Mineral) Combined Tanning Agents and Degree of Tannage

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1.1 This practice covers the determination of the combined tannin and nonextractable organic resins and the degree of tannage of all types of vegetable-tanned leather and leather with organic retannages. This practice does not apply to wet blue.

1.2 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.


3.1 This practice may be used to determine non-protein or non-nitrogen containing organic matter in leather which is not extractable with water or hexane. Examples would be vegetable tannins and acrylic lubricants.

SDO ASTM: ASTM International
Document Number D6020
Publication Date Dec. 1, 2020
Language en - English
Page Count 2
Revision Level 00(2020)
Supercedes
Committee D31.01
Publish Date Document Id Type View
Sept. 10, 2000 D6020-00 Revision
Dec. 1, 2020 D6020-00R20 Reaffirmation
Sept. 1, 2016 D6020-00R16 Reaffirmation
April 1, 2010 D6020-00R10 Reaffirmation
Sept. 1, 2005 D6020-00R05 Reaffirmation