Are these double junction / lab grade?

It’ll work fine in your aquarium as I believe that it’s designed for Ozone generators. They generally last 1 1/2 to 2 1/2 years.

Can this be used with Cole-Parmer p-100 ?

If it's a BNC connection and the range of the probe fits your needs it should work.

Yes, it worked perfect for controller my ozone generator through the Apex.

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