All High Purity Compounds 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/IEC 17034 - Reference Material Producer
| 1x | pH 4.00 at 20 C Citric Acid/ Sodium Chloride/ Sod... | EUR 40.00 |
| 1x | Discount for non-paper Certificate of Analysis | EUR -1.00 |