D2807 Standard Test Method for Chromic Oxide in Leather (Perchloric Acid Oxidation)
D6016 Standard Test Method for Determination of Nitrogen, Water Extractable in Leather
D6020 Standard Practice for Calculation of (Non-Mineral) Combined Tanning Agents and Degree of Tannage
D2813 Practice for Sampling Leather for Physical and Chemical Tests
D6659 Practice for Sampling and Preparation of Wet Blue and Wet White for Physical and Chemical Tests
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method