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Bluelab ORP Meter
Bluelab ORP Meter
Bluelab ORP Meter
Bluelab ORP Meter
Bluelab ORP Meter
Bluelab ORP Meter
METORP

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

Replacement Bluelab ORP Probe available separately.
  • Product manual
  • Technical specifications

Grab a replacement probe

Bluelab ORP Probe

Bluelab ORP Probe

The hidden key to clean, healthy hydroponic systems

Oxidation-Reduction Potential (ORP) helps you take control of water quality, leading to healthier plants, lower risks, and a more efficient growing system. ORP directly measures the disinfecting power of water.

Measuring ORP helps prevent risks such as contamination, biofouling, equipment failure, and poor crop yields while ensuring compliance with water quality certification standards.

A higher ORP value indicates a stronger oxidative environment, meaning more effective disinfection against bacteria, algae, and pathogens. It’s a key metric for ensuring clean, healthy water in hydroponic and irrigation systems.

Improve root and plant health with fast, precise readings

The Bluelab ORP Meter is built for accuracy and durability. It offers a seamless way to monitor oxidation levels in various applications.

Whether you're monitoring water quality, optimizing nutrient solutions, or ensuring the right oxidation balance, the Bluelab ORP Meter delivers fast, precise readings – with no calibration required.

Paired with the Bluelab ORP Probe, which is reliable and easy to use, it’s an essential tool for maintaining optimal sanitation and water management. It is backed by a 5-year warranty for added peace of mind.

  • Reliable, consistent and very easy to use. Excellent value for hobbyist and field use.
  • Readings are quick and very accurate, backlit display makes it easy to see measurements.
  • Great fit for monitoring water quality - compact, handheld design with bright backlit display.
T
Top R.
Accurate and Easy Setup for Monitoring Water Quality

The Bluelab ORP meter has been a great tool for monitoring my water quality. The readings are quick and very accurate, and the backlit display makes it easy to see measurements in any lighting. I really like the replaceable probe and long 2-meter cable, which give flexibility and help extend the life of the device. The build quality feels solid and professional, and setup was simple right out of the box. The device is compact and perfectly handheld. If you need a reliable ORP tester for consistent and precise monitoring, this one is a fantastic choice.

Top R. review photo
M
Michelle C.
Consistent results, but doesn’t match our other two ORP meters

The meter is easy to use, has a clear display and produces consistent readings. However, its measurements don't match our existing ORP meters, so I'm not yet confident in its accuracy.

Michelle C. review photo Michelle C. review photo Michelle C. review photo
Z
Z
So far so good

The meter feels well built, is easy to read and has been a good addition to my hydroponic system. I can't yet comment on long-term accuracy but it has performed well so far.

K
Käufer
Top product

Great device that works very well and remains reliable over a long period of time.

L
Landon B.
Reliable, consistent, affordable

This ORP meter is reliable, consistent and very easy to use. It feels well made, appears accurate and offers excellent value for hobbyist and field use. I can definitely recommend it.

C
CJM
Handy Handheld Device.

This handheld ORP meter is easy to use, provides quick readings and features a useful backlit display and long cable. I appreciate the replaceable probe and straightforward operation.

M
Mo s.
Clear Readings, Steady Hands

Compact and well-built device with a bright backlit display that makes readings easy to see in any lighting. The probe responds quickly and gives consistent, accurate results for daily water monitoring. The 2 m cable is convenient and flexible during testing. Initial calibration takes a bit of patience, but once set up, it performs steadily. Overall, a reliable ORP meter with a clean design and solid construction — a good tool for precise water quality tracking.

S
Sam V.
Great Handheld ORP Meter

I was looking for a reliable, user-friendly meter to monitor the water quality in my commercial hydroponic system, specifically to track oxidation-reduction potential, and this has been a great fit. The compact, handheld design makes it easy to carry around and take readings. The bright backlit display is excellent for low-light conditions, and the auto-off function helps conserve battery life. I appreciate the reliable monitoring, especially the replaceable Bluelab ORP probe with a KCl-filled cap to maintain hydration for accurate readings. The meter is simple to operate and requires no ORP calibration, and the long cable is very convenient for hard-to-reach areas.