All Conductivity Standard 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 | Water, Nitrate-free and Nitrite-free | EUR 64.00 |
| 1x | Отстъпка за безхартиено копие на Сертификат за анализ | EUR -1.00 |