pH Sensor

Product image for pH Sensor
Product image for pH Sensor
Product in use image for pH Sensor
Product in use image for pH Sensor

Our general-purpose pH Sensor can be used across disciplines, including chemistry, biology, middle school science, and environmental science.


Use the pH Sensor just as you would a traditional pH meter with the additional advantages of automated data collection, graphing, and data analysis. Typical activities using our pH sensor include:

  • Acid-base titrations
  • Studies of household acids and bases
  • Monitoring pH change during chemical reactions or in an aquarium as a result of photosynthesis
  • Investigations of acid rain and buffering
  • Analysis of water quality in streams and lakes

If you are studying Tris buffers or semisolids such a soil slurry, consider the Vernier Tris-Compatible Flat pH Sensor.



  • Type: Sealed, gel-filled, epoxy body, Ag/AgCl
  • Shaft Diameter: 12 mm OD
  • Response time: 90% of final reading in 1 second
  • Temperature range: 5 to 80°C
  • Range: pH 0–14
  • Accuracy: +/- 0.2 pH units
  • Isopotential pH: pH 7 (point at which temperature has no effect)

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

What's Included

  • Vernier pH Sensor
  • pH storage solution
  • pH storage solution bottle
  • User manual


The pH Sensor requires a compatible interface and software to collect data. Interface and software sold separately. Getting started with probeware »

Compatible Interfaces

The pH Sensor is compatible with these interfaces:

Ordering Information

All prices are for U.S. educators.

    NameOrder CodePriceQuantity
    pH SensorPH-BTA$79
    Optional Accessories
    Electrode SupportESUP$10
    pH Buffer CapsulesPHB$12
    pH Storage SolutionPH-SS$16
    pH Storage Solution Bottles (5)BTL$10
    Water Depth SamplerWDS$79

    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 »

    Order Code PH-BTA
    U.S. Educator Price $79

    Sample Data

    Acid-base titration
    Testing household acids and bases
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