Apex Calibration Kit

The Neptune Systems Probe Calibration Kit
includes everything you need to calibrate your pH probe and salinity probe for
reef tank conditions.

The single-use packets make calibration procedures easy
and only requires clean water to rinse the probe between calibrations. Neptune
Systems uses only quality ingredients when producing their calibration
solutions ensuring accuracy.

Includes:
Calibration 7 & 10 and Salinity Calibration Solution