Description METORP Monitor Oxidation-Reduction Potential (ORP) to track solution quality, disinfecting power, and sanitation throughout the growing cycle. Compact, handheld design for convenient use Bright, easy-to-read backlit display Replaceable Bluelab ORP Probe (with BNC connection) No ORP probe calibration required KCl-filled probe cap to keep the probe hydrated 2 metre / 6.6ft cable for measuring in hard-to-reach locations Dual compatibility allows optional use of a Bluelab pH probe for comprehensive monitoring (pH probe sold separately) Auto-off function
