Reef Angel Forum

Are the numbers we get when calibrating our ph probe unique for the probe or for the controller? Meaning, if I calibrate my ph probe using one RA unit and then hook it up to another RA unit (and set the ph numbers on the second RA unit to match the first RA unit), will my ph read the same?

I'm thinking yes, but I wanted to confirm.

The calibration applies to both controller and probe.
2 controllers with same probe may read different numbers and 2 probes on the same controller would also read different numbers.
They would be very close, but nonetheless different.