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ASTM D6401-99

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Standard Test Method for Determining Non-Tannins and Tannin in Extracts of Vegetable Tanning Materials

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1.1 This test method is intended for use in determining the quantity of soluble non-tannins and tannin in solutions of tannin extracts, water extracts of vegetable tanning materials, or tanning liquors. The method is applicable to the analysis of liquid, solid, pasty, and powdered extracts and to extracts of raw or spent materials.

1.2 The values stated in SI units are to be regarded as the standard. The inch-pound units given in parentheses are for information only.

1.3 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 and health practices and determine the applicability of regulatory limitations prior to use.


SDO ASTM: ASTM International
Document Number D6401
Publication Date May 10, 1999
Language en - English
Page Count 4
Revision Level 99
Supercedes
Committee D31.01
Publish Date Document Id Type View
May 10, 1999 D6401-99 Revision
Dec. 1, 2020 D6401-99R20 Reaffirmation
Sept. 1, 2016 D6401-99R16 Reaffirmation
April 1, 2009 D6401-99R09 Reaffirmation
April 1, 2004 D6401-99R04 Reaffirmation