orp probe

[gbr]

Should I be able to interchange ORP probes between models of ORP meters? Say a Red Sea controller using a Pinpoint probe? The ORP meter is just a voltmeter right?

 

[Randy Holmes-Farley]

As long as the connectors hook up, it is acceptable. Almost all have BNC connectors. Some very old ORP probes might have a different internal reference electrode, but they would not be sold to hobbyists now.

This article may be useful:

ORP and the Reef Aquarium
http://reefkeeping.com/issues/2003-12/rhf/feature/index.htm

 

[gbr]

Thank you as always. Sorry for the delay in response...been away for a while. For anyone who may wonder, the probe from Pinpoint works fine and is a lot more "reactive" (probably not a good word from a Chem standpoint). In other words, with the old Rea Sea probe, the ORP would rarely vary and usually would only seem to vary up...to a max then hold that value. The Pinpoint probe, varies up and down through different times of the night/day.

 

[Randy Holmes-Farley]

It should vary with pH, and if it doesn't, there is probably something wrong with the probe. So it sounds like you are on the right track!