NEPTUNE, APEX CALIBRATION Pack (7.0,10.0,53 MS/CM)

Over the course of a few months, it is common for probes to drift and they should be recalibrated when that occurs. 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