1.1This 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.
ASTM D6020-00(2016)
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Standard Practice for Calculation of (Non-Mineral) Combined Tanning Agents and Degree of Tannage
ASTM International , 09/01/2016
Pages: 2
