Neptune Apex Lab Grade ORP Probe

Neptune Apex Lab Grade ORP Probe

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Neptune Apex Lab Grade ORP Probe - #17385

The Neptune Systems Apex ORP Probe, Lab Grade, is meant for use with the Neptune Systems Apex pH / ORP Probe Module, PM1.

The Neptune Systems Apex Double Junction Lab Grade ORP Probe holds calibration longer and has a longer lifespan than single junction probes. Double junction probes have a second vessel inside the main electrolyte with a second internal junction. The means that even when the aquarium water eventually begins to make its way in the first compartment, it still has to go through the second junction to contaminate the electrolyte surrounding the reference electrode.