An ORP (oxidation-reduction potential) probe provides insight into the bacterial content of your hydroponic system. Monitor, track and analyze the changing nature of your nutrient system.

The ORP electrode itself, is not included with this product. ORP electrodes can be found easily in the market for much less than we could offer them for.

Range: -1000mV to 1000mV
Accuracy: +/- 20mV
Resolution: 1mV

Network Current Usage: 15 mA