CERTIFICATE OF ANALYSIS
L-CYSTEINE
BATCH NO: 20060110
MANUFACTURING DATE: 10 JAN 2006
EXPIRY DATE: 10 JAN 2008
| ITEM | SPECIFICATION | RESULT |
| 1. Appearance: | white crystalline powder | Conform |
| 2. Specific rotation: | +8.3 to +9.5 | 8,7 |
| 3. Assay: | 98.0--101.0% | 99,92% |
| 4. Loss on drying: | 0.5% Max. | 0,25% |
| 5. Residue on ignition: | 0.05% Max. | 0,03% |
| 6. Chloride: | 0.04% Max. | 0,038% |
| 7. Fe: | 1PPM Max. | Conform |
| 8. Pb: | 10ppm Max. | 5ppm Max. |
| 9. Ammonium: | 0.02% Max. | Conform |
| 10. Transmittance: | 98.0% Min. | 99,80% |
| 11. Other amino acids: | Negative | Conform |
| 12. Arsenic: | 1ppm Max. | Conform |
| 13. Sulphate(SO4) | 0.028%max | Conform |
| 14. PH: | 4.5 to 5.5 | 5,4 |
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