ASTM D6401-99(2016)
- Standard Test Method for Determining Non-Tannins and Tannin in Extracts of Vegetable Tanning Materials
- standard by ASTM International, 09/01/2016
- Category: ASTM
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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.
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