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  

Neptune Systems has designed the MPR - Magnetic Probe Rack specifically for the Apex and will hold up to 4 probes with one hole being slightly over-sized to hold those larger...

Lab Grade Double Junction ORP Probe Double junction lasts longer BNC style connector with 10' cord Comes already calibrated, no calibration needed Neptune Systems recommends replacing ORP probe every 24 months...