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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Double Junction Lab Grade pH Probe – Neptune Systems
Original price was: $83.99.$65.08Current price is: $65.08.
Free shipping on orders over $50Availability: 87 in stock
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