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 sealerd, 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.

Features:
  - 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