ASTM D 2868 : 2024
Current
The latest, up-to-date edition.
Standard Test Method for Nitrogen Content (Kjeldahl) and Hide Substance Content of Leather, Wet Blue and Wet White
English
01-12-2024
| Committee |
D 31
|
| DocumentType |
Test Method
|
| Pages |
6
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Current
|
| Supersedes |
1.1This test method covers the determination of the nitrogen content of all types of leather, wet blue and wet white. The nitrogen content is used to calculate the hide substance (protein fiber) content of leather, wet blue and wet white.
Note 1:The original test method for leather was essentially a composite of Method 6441 of Federal Test Method Standard No. 311 and Method B5 of the American Leather Chemists Association.
Note 2:Melamine, if present in bonded leather, could give an artificially high value for the calculation of protein fiber.
1.2The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3This 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.4This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
| ASTM D 2807 : 2017 : REV A | Standard Test Method for Chromic Oxide in Leather (Perchloric Acid Oxidation) |
| ASTM D 6020 : 2000 : R2020 | Standard Practice for Calculation of (Non-Mineral) Combined Tanning Agents and Degree of Tannage |
| ASTM D 6016 : 2017 : R2023 | Standard Test Method for Determination of Nitrogen, Water Extractable in Leather |
| ASTM D 2813 : 2003 : R2025 | Standard Practice for Sampling Leather for Physical and Chemical Tests |
| ASTM D 2813 : 2003 : R2021 | Standard Practice for Sampling Leather for Physical and Chemical Tests |
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