Bluelab ORP Meter | Oxidation-Reduction Potential Tester | Solution Sanitation & Disinfecting Power Monitor

Keep a closer eye on solution quality with the Bluelab ORP Meter — a compact handheld tool designed to measure Oxidation-Reduction Potential (ORP) so you can monitor the disinfecting power and sanitation performance of your nutrient solution throughout the growing cycle.

ORP readings help indicate how “oxidising” your solution is, which can be useful when managing water treatment and sanitation routines in recirculating systems. The Bluelab ORP Meter makes checking simple with a bright backlit display, a 2-metre cable for hard-to-reach reservoirs, and a replaceable ORP probe with a BNC connection.

There’s also no ORP probe calibration required, reducing maintenance time. A KCl-filled probe cap helps keep the probe hydrated between uses, supporting consistent readings.

For growers wanting a broader snapshot of their solution, the meter also offers dual compatibility—you can optionally use a Bluelab pH probe for comprehensive monitoring (sold separately).

Key Features

• Measures ORP (Oxidation-Reduction Potential) to help track solution quality and sanitation strength
• Compact handheld design for easy day-to-day checks
• Bright backlit display for low-light use
• Replaceable Bluelab ORP probe (BNC connection)
• No ORP probe calibration required
• KCl-filled probe cap keeps probe hydrated
• 2m cable for measuring in awkward or deep reservoirs
• Optional compatibility with a Bluelab pH probe (sold separately)
• Auto-off function to preserve battery