All Single-Element 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 | Bromocresol Green Reagent | EUR 66.00 |
| 1x | m-Cresol Purple Solution | EUR 37.00 |
| 1x | Congo Red Paper (Pack of 50) | EUR 171.00 |
| 1x | Litmus Paper, Red (Pack of 50) | EUR 171.00 |
| 4x | Discount for non-paper Certificate of Analysis | EUR -4.00 |