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1.1 This test method covers the determination of the nitrogen content of all types of leather. The nitrogen content is used to calculate the hide substance (protein fiber) content of leather.
Note 1—This test method is essentially a composite of Method 6441 of Federal Test Method Standard No. 311 and Method B 5 of the American Leather Chemists Association.
1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
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
ICS Number Code 59.140.30 (Leather and furs)
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ASTM D2868-96(2001), Standard Test Method for Nitrogen Content (Kjeldahl) and Hide Substance Content of Leather, ASTM International, West Conshohocken, PA, 1996, www.astm.orgBack to Top