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Vernier Software & Technology

ORP Sensor


The Oxidation-Reduction Potential (ORP) Sensor measures the ability of a solution to act as an oxidizing or reducing agent. Use the ORP Sensor to measure the oxidizing ability of chlorine in swimming pools or to determine when the equivalence point has been reached in an oxidation-reduction reaction.

Sample Data


  • Type: Sealed, gel-filled, epoxy body, Ag/AgCl reference
  • Storage solution: pH-4/KCl solution (10 g KCl in 100 mL buffer pH-4 solution)
  • Cable: 1 meter coaxial cable with BNC connector
  • Redox potential range: -450 to +1100 mV
  • ORP element: 99% pure platinum band sealed on a glass stem
  • Temperature range:

    • 0-60ºC
    • 12 mm OD
    • Impedance: ~20 kΩ at 25ºC
Download the user manual for full specifications

Experiments and Lab Ideas

Select a lab book to see a list of experiments and more information.

Lab Ideas and Innovative Uses

Do you have an innovative use for Vernier technology? What about a favorite lab or demo? We love to hear what creative uses people have for our products. Please email them to

Compatibility Requirements

The ORP Sensor may require a compatible interface and software. Choose a platform below to see compatible interface and software options.

What’s Included

Ordering Information

All prices are for U.S. educators.

NameOrder CodePriceQuantity
ORP SensorORP-BTA$81
Optional Accessories
Electrode SupportESUP$10
pH Storage SolutionPH-SS$16


Related Products

Educational use only: Vernier products are designed for educational use. They are not appropriate for industrial, medical, or commercial applications. Product usage disclaimer »

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