PM1 + Lab Grade Double Junction ORP Probe Bundle
PH/ORP MODULE- PM1
The PM1 probe module is just what you need if you want to monitor pH or ORP in your tank. And, there is an added bonus, you get an extra temperature port as well as six I/O switch inputs.
This module is perfect for someone that wants to add an additional pH or ORP port to their Apex System.
Replace your ORP probe or add another for another tank
Buy this probe if you are:
- Replacing a worn out ORP probe
- Adding another tank to your system and purchased a PM1 to do so.
- Double Junction probes will last longer- about twice a long. A Single Junction Lab grade should be replaced in 12 months and a Double Junction Lab Grade should be replaced in 24 months.