ASTM-D6020 › 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.
combined tannins; degree of tannage; leather; tannin analysis; vegetable-tanned leather ;; ICS Number Code 59.140.10 (Processes and auxiliary materials)
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2000 R16 EDITION
Sept. 15, 2016