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Description: This is the Vernier pH Sensor, a simple device that can be used to measure the acidity and basicity of liquids. This Vernier sensor can be used in a multitude of applications including acid-base titrations, pH monitoring in home aquariums, analysis of water quality in lakes and streams, and more.

Each pH sensor probe is a sealed, gel-filled, type with a hard outer epoxy body that can function in a temperature range of 5 to 80°C. Additionally, these sensors can test in the typical pH range of 0-14 and each have an accuracy of +/- 0.2 pH units.

Vernier Software and Technology has been a leader in data collection and analysis for educators world-wide. They were amongst the first companies to design and promote the use of computers, sensors, and data collection in K-12 classroom laboratory experiments.

Note: Due to manufacturer’s restrictions, we can only ship these to the USA. Sorry world!


  • Type: Sealed, gel-filled, epoxy body, Ag/AgCl
  • Temperature range: 5 to 80°C (41 to 176°F)
  • Range: pH 0–14
  • Accuracy: +/- 0.2 pH units
  • Isopotential pH: pH 7


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Customer Comments

  • Can this sensor be used to continuously monitor pH, for example, in a pool setting?

  • The thing that sucks about this sensor is that I can’t think of a project to use it in… yet!

  • I hope it’s sealerd gooder than the last one I bought dagnabbit!

  • “probe is a sealerd”… Should be sealed.

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