Probe Calibration Kit - ph 7.0, ph 10.0, & Salinity 53000uS

Keep your Apex system's probes performing at peak accuracy with this essential calibration kit. Probe drift is inevitable in reef environments, making regular recalibration critical for reliable water parameter monitoring. This Neptune Systems kit delivers everything needed for precise two-point pH calibration (7.0 and 10.0) plus salinity calibration at 53,000 µS—matching natural seawater conditions. Single-use foil packets guarantee fresh, stable solutions every time. Compatible with Neptune pH and conductivity probes, it's the straightforward maintenance solution serious aquarists depend on to keep their systems dialled in.