All Organic Solutions are Certified Reference Materials, produced and calibrated under CPAchem's quality system that is:
- ISO 9001 certified.
- accredited according to ISO/IEC 17025 - Testing
- accredited according to ISO 17034 - Reference Material Producer
| 1x | Sodium thiosulphate 0.1M | EUR 33.00 |
| 1x | Zinc chloride 0.05M | EUR 64.00 |
| 1x | Sulphuric acid 0.5M | EUR 33.00 |
| 3x | Discount for non-paper Certificate of Analysis | EUR -3.00 |