pH Sensor
Recommended for College, High School, and Middle School Science. Interface and software sold separately.
Our general-purpose pH Sensor can be used across disciplines, including chemistry, biology, middle school science, and environmental science.
Description
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.
Specifications
- Type: Sealed, gel-filled, epoxy body, Ag/AgCl
- Response time: 90% of final reading in 1 second
- Temperature range: 5 to 80°C
- 12 mm OD Range: pH 0–14
- Resolution: 0.005 pH units
(LabQuest 2, LabQuest, LabQuest Mini, Go!Link, LabPro) - Isopotential pH: pH 7 (point at which temperature has no effect)
Experiments and Lab Ideas
Select a lab book to see a list of experiments and more information.

Chemistry with Vernier (10)
Includes student instructions, teacher tips, safety information, and sample data.
Go to Book Page- 21 Household Acids and Bases
- 22 Acid Rain
- 23 Titration Curves of Strong and Weak Acids and Bases
- 24 Acid-Base Titration
- 25 Titration of a Diprotic Acid: Identifying an Unknown
- 27 Acid Dissociation Constant, Ka
- 31 Time-Release Vitamin C Tablets
- 32 The Buffer in Lemonade
- 35 Determining the Phosphoric Acid Content in Soft Drinks
- 36 Microscale Acid-Base Titration

Investigating Environmental Science through Inquiry (10)
Includes student instructions, teacher tips, safety information, and sample data.
Go to Book Page
Advanced Chemistry with Vernier (8)
Includes student instructions, teacher tips, safety information, and sample data.
Go to Book Page- 6 Standardizing a Solution of Sodium Hydroxide
- 7 Acid-Base Titration
- 11 Investigating Indicators
- 14A Separation and Qualitative Analysis of Cations
- 14B Separation and Qualitative Analysis of Anions
- 19 Buffers
- 23 Determining the Ksp of Calcium Hydroxide
- 24 Determining Ka by the Half-Titration of a Weak Acid

STEM with Vernier and LEGO MINDSTORMS NXT (7)
Includes student instructions, teacher tips, safety information, and sample data.
Go to Book Page
Investigating Chemistry through Inquiry (5)
Includes student instructions, teacher tips, safety information, and sample data.
Go to Book Page
Biology with Vernier (5)
Includes student instructions, teacher tips, safety information, and sample data.
Go to Book Page
Earth Science with Vernier (5)
Includes student instructions, teacher tips, safety information, and sample data.
Go to Book Page
Science with TI-Nspire Technology (4)
Includes student instructions, teacher tips, safety information, and sample data.
Go to Book Page
Agricultural Science with Vernier (4)
Includes student instructions, teacher tips, safety information, and sample data.
Go to Book Page
Water Quality with Vernier (2)
Includes student instructions, teacher tips, safety information, and sample data.
Go to Book Page- 2 pH
- 11 Alkalinity

Real-World Math with Vernier (2)
Includes student instructions, teacher tips, safety information, and sample data.
Go to Book Page
Middle School Science with Vernier (2)
Includes student instructions, teacher tips, safety information, and sample data.
Go to Book Page
Investigating Biology through Inquiry (2)
Includes student instructions, teacher tips, safety information, and sample data.
Go to Book Page
Forensics with Vernier (2)
Includes student instructions, teacher tips, safety information, and sample data.
Go to Book Page
Physical Science with Vernier (2)
Includes student instructions, teacher tips, safety information, and sample data.
Go to Book Page
Lab Ideas and Innovative Uses
What’s Included
- Vernier pH Sensor
- pH storage solution
- pH storage solution bottle
- User manual
Sensor Requirements
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
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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