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Neptune Systems Double Junction Lab Grade ORP Probe

Product code: 5949
CT-NS-PRBORPDJ

Availability: In stock

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$84.95
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Neptune Systems Double Junction Lab Grade ORP Probe

Double junction probes place 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.

What's the difference between double junction and single junction probes?
Single junction probes put the reference electrode in direct contact with aquarium water. Over time, the junction will slowly leak aquarium water into the electrolyte which changes the accuracy of the probe and requires more frequent calibrations.
 

Double junction probes place 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.

Neptune Systems Double Junction Lab Grade ORP Probe

Double junction probes place 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.

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  1. Works as expected. Review by Jamie A.
    Product Rating:

    I don't know how important it is to measure ORP if you're not running ozone, but this probe reacts quickly and I've never had a reason to doubt its accuracy. If you are running ozone, I would probably double check against another ORP meter to be safe before trusting it to control the ozone generator. My tank reads in a pretty narrow range that is mostly consistent with rises and falls of pH (inversely correlated), that's good enough for me. (Posted on 2/5/2019)


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