ASTM International - ASTM D6020-00
Standard Practice for Calculation of (Non-Mineral) Combined Tanning Agents and Degree of Tannage
|Publication Date:||10 September 2000|
|ICS Code (Processes and auxiliary materials):||59.140.10|
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.