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.
pH Probe Calibration
If you have a single junction or a double junction pH probe, you can use the pH 7.0 and 10.0 calibration solution packets. Most controllers will require a two-point calibration method that lets you calibrate the probe on each side of the range you will be reading allowing it to be correct anywhere in the middle of the two values. Just tear the top off and place your probe in the packet for a minute or so and follow the calibration directions for your controller.