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TECHNICAL REPORT Sample of Chamois Your ref: JBE/CRR Our ref: T93-4-0422 Report by JH/VW |
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| No. 0076 Description of sample Your Letter 25/01/04 Date received 26/01/94 Date work carried out 26/28/01/94 Date out 31/01/94 |
Testing of chamois leather to BS 6715:1991
| Test | Method | Requirement | Result |
|---|---|---|---|
| pH of aqueous extract | BS 1309 (1974) Method 9 | 5.0 to 10.5 | 5.00 |
| Oils and fats soluble in dichloromethane* | BS 1309 (1974) Method 4 | maximum 15% | 5.2 |
| Sulphated total ash* | BS 1309 (1974) Method 6 | maximum 24% | 2.2 |
| Total oils, fat and ash* | BS 1309 (1974) Methods 4 and 6 | maximum 35% | 7.4 |
| Water absorption* | BS 6715:1991 Appendix B | minimum 375% | 723 |
* Values are expressed as a percentage based on the mass of fat free leather containing 14% moisture.
Comments
For ministry of Defence items only, the minimum percentage water absorption is 400%.
Conclusion
The sample of chamois leather tested above complies with the requirement of BS 6715:1991.
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| Hutchings & Harding Ltd 163 High Street Sawston Cambs. CB22 3HN |
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