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Neptune Systems Double Junction Lab Grade pH Probe

Product code: 5948
CT-NS-PRBPHDJ

Availability: In stock

Ships Monday, February 25 if ordered in the next 2 days and 19 minutes!

$74.95
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Neptune Systems Double Junction Lab Grade pH 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 pH 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. Excellent accuracy and response. Review by Jamie A.
    Product Rating:

    This one Neptune got right. This probe holds calibration very well and responds very quickly, maybe too quickly since I often get pH alerts when my alkalinity doses. It closely agrees with my handheld pH meter. I find it quite useful in determining my dosing schedule. I won't hesitate to purchase this probe again when the time comes. (Posted on 2/5/2019)


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74.95 In stock
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