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Bluelab ORP Meter - Water Quality & Disinfection Monitor

$219.00 USD
starting from 0% interest financing from /mo.

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Options:Pay in Four, Pay Monthly
Amount:Up to $1,500 (Pay in 4)
Up to $10,000 (Monthly)
Schedule:Bi-weekly to Monthly
Term:6 weeks, 12 or 24 months
Interest:0% to 35.99% APR*
Credit Check?Soft Check Only
Schedule:Bi-weekly to Monthly
Term:6 weeks, 6 or 12 months
Interest:0% to 35.99% APR*
Credit Check?Soft Check Only
Finance up to:$4,000
Must apply on a desktop device.
Schedule:Flexible
Term:Up to 36 months
Interest:Processing fee + interest
Lease-to-Own?Yes
Amount:$500 to $10,000
  • Measurement range of plus or minus 1000 mV for accurate monitoring of oxidative potential
  • BNC probe interface allows for quick sensor replacement and compatibility with external pH probes
  • Includes a 2-metre reach cable for taking readings in large reservoirs or tanks
  • 5-year limited warranty
  • View More Details

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THROUGH THE Cultivator's LENS Hands-On Evaluation

  • You are adding ORP monitoring because you want to verify your reservoir disinfection levels are actually working
  • You are tracking water health because you need to detect pathogen risks before they impact your plant biomass

  • The BNC connection lets you swap out a worn probe in seconds without replacing the entire meter assembly
  • We recommend keeping the KCl storage solution handy because it prevents the sensor from drying out between sessions

  • Users who track disinfection levels report catching water quality dips early, preventing potential root zone issues
  • Operators who rely on this unit say it gives them confidence that their cleaning protocols are fully effective

Bluelab ORP Meter - Water Quality & Disinfection Monitor

While pH and EC readings tell you about nutrient balance, they say nothing about whether your water is actually clean. Contamination, biofouling, and pathogen growth can quietly undermine a system even when nutrient levels look perfect. The Bluelab ORP Meter closes that gap by directly measuring Oxidation-Reduction Potential — the disinfecting power of your water — so you can catch water quality problems before they cost you a crop.

A replaceable ORP Probe with a BNC connection means a worn sensor doesn't mean replacing the whole meter, and it requires no calibration to stay accurate. A KCl-filled probe cap keeps the probe hydrated between uses, and a 2-metre (6.6ft) cable lets you take readings in reservoirs and tanks that are hard to reach directly.

A higher ORP reading signals a stronger oxidative environment and more effective disinfection against bacteria, algae, and pathogens, making it a key metric for compliance with water quality standards as well as day-to-day system health. For growers who want a fuller picture, the meter offers dual compatibility with a Bluelab pH probe (sold separately), and an auto-off function conserves battery life between checks.

Features

🔬
Replaceable ORP Probe

BNC-connection probe swaps out without replacing the entire meter.

✅
No Calibration Required

The ORP probe stays accurate without a setup step before every use.

💧
KCl-Filled Probe Cap

Keeps the probe hydrated and ready with storage solution between measurements.

📏
2m / 6.6ft Reach Cable

Take readings in hard-to-reach reservoirs and tanks.

🔀
Dual pH Compatibility

Optionally use a Bluelab pH probe (sold separately) for fuller monitoring.

🔋
Auto-Off Function

Conserves battery life automatically between measurements.

What's Included

Specifications

Specification Value
ORP Range ±1000 mV
ORP Resolution 1 mV
ORP Accuracy (at 25°C / 77°F) ±5 mV
pH Range (with optional pH probe, sold separately) 0.0–14.0
pH Resolution 0.1
pH Accuracy (at 25°C / 77°F) ±0.1
Operating Environment Nutrient solution, 32–122°F (0–50°C) — do not use or store outside this range
Power 2x AAA alkaline battery

Support & Manuals

Warranty

The Bluelab ORP Meter is covered by a 5-year limited warranty.

Frequently Asked Questions

What does ORP measure, and why does it matter?+

ORP (Oxidation-Reduction Potential) measures the disinfecting power of your water. A higher reading means a stronger oxidative environment and more effective protection against bacteria, algae, and pathogens.

Does the ORP probe need calibration?+

No. The ORP probe requires no calibration, so you can take accurate readings without a setup step every time.

Can this meter also read pH?+

Yes, with a Bluelab pH probe attached (sold separately), giving you dual pH and ORP monitoring from one meter.

Is the ORP probe replaceable?+

Yes. It uses a BNC connection, so a worn replacement ORP probe can be swapped out without replacing the entire meter.

How far does the probe cable reach?+

The cable measures 2 metres (6.6ft), letting you test reservoirs and tanks that are hard to reach directly.

Why should I monitor ORP alongside pH and EC?+

ORP catches water quality risks like contamination and biofouling that pH and EC readings don't reveal, helping protect equipment and crop yields while supporting water quality compliance.

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Questions About This Product?

Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)

Call (360) 800-5535

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