All Petrochemical Standards 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 | PCB 147 CAS:68194-13-8 | EUR 129.44 |
| 1x | Sodium Thiosulphate 0.1M (0.1N) | EUR 24.00 |
| 2x | Discount for non-paper Certificate of Analysis | EUR -2.00 |