For recommended 0% O2 calibration of optical oxygen sensors. Each capsule results in 50mL calibration solution (PU=10).
For obligatory acid calibration of optical pH sensors. Each capsule results in 100mL calibration buffer solution (PU=10).
For recommended basic calibration of optical pH sensors. Each capsule results in 100mL calibration buffer solution (PU=10).
Tools that enable essential services and functions, including identity verification, service continuity and site security. This option cannot be denied.
Tools that collect anonymous data about website usage and functionality. We use the knowledge to improve our products, services and user experience.