Bluelab ORP Meter

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