Trident Calibration Solution

Lab Grade Salinity / Conductivity Probe Used for measuring salinity in your aquarium via an Apex Controller or PM2 Module.(Does NOT work with an Apex EL unless you have a...

Long Lasting Temperature Probe Long lasting temperature probe Very accurate Add this probe to PM1, PM2 or PM3 Module Replace old probe for your apex  

5 foot black sample line tubing for the Neptune Systems Trident.

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...