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 | Acetate buffer, pH 3.5, TS | EUR 65.00 |
| 1x | Water, ammonia-free, R | EUR 58.00 |
| 1x | Phosphate Buffer pH 3.5, 0.02 M | EUR 65.00 |
| 1x | Citrate Buffer pH 3.0, 0.25 M | EUR 65.00 |
| 1x | Boric Buffer pH 10.4; Borate Buffer pH 10.4 | EUR 65.00 |
| 1x | Cupric Sulphate Solution pH 5.2, Buffered | EUR 65.00 |
| 1x | Acetate-Edetate Buffer pH 5.5 | EUR 65.00 |
| 7x | Discount for non-paper Certificate of Analysis | EUR -7.00 |