Here’s the best tool for measuring pH since litmus paper. The Wireless pH Sensor connects via Bluetooth® to monitor the pH of solutions.
- 1x Coin cell battery
- 1x Direct-connect BNC pH probe
- 1x Probe storage bottle and solution
See the Buying Guide for this item's required, recommended, and additional accessories.
Product Summary
The Wireless pH Sensor is a must-have for any chemistry, biology, or environmental science course. Equally capable in the lab or field, the sensor eliminates the hassle of cables, reducing spills and improving safety. Plus, it rarely requires charging; the sensor's coin cell battery lasts for 2-3 years in most labs and costs about one dollar to replace. It can transmit data in real time, or store data for days when continuous monitoring is required. The Wireless pH Sensor enhances countless activities, including acid-base titrations, investigations into household chemicals, analyses of chemical reactions, water quality studies, and much more.
The Wireless pH Sensor uses a BNC connector to attach the pH probe. This amplifier can be used with other probes as well, such as the ORP, Flat pH, and ISE electrodes. Please see the buying guide for a full list of compatible accessories.
Features
- Simply pair and go, no cables or interfaces to manage
- Compatible with ion-selective electrodes (ISE) and the oxidation reduction probe (ORP)
- Bluetooth® connectivity and a long-lasting coin cell battery
- Logs pH data directly onto the sensor for long-term experiments
- Wirelessly connects to SPARKvue and Capstone for intuitive analysis and lab reports
Perform These Experiments
- Monitor pH during chemical reactions
- Investigate household chemicals
- Explore acid-base titrations
- Investigate the chemistry of buffers
- Measure pH for water quality studies
What's Included
- 1x Coin cell battery
- 1x Direct-connect BNC pH probe
- 1x Probe storage bottle and solution
Product Specifications
| pH Range | 0 to 14 pH |
| Resolution | 0.02 pH |
| Accuracy | ±0.1 pH with calibration |
| Temperature Range | 5°C to 60°C |
| Connectivity | Bluetooth 5.2 |
| Logging | Yes |
| Battery | Coin Cell |
| Water resistant | IPX4 (to splashes) |
Battery & Logging
| Stored Data Points Memory (Logging) 1 | >55,000 |
| Battery - Connected (Data Collection Mode) 2 | >220 hr (2-3yrs of normal classroom use)* |
| Battery - Logging (Data Logging Mode) 3 | 90 days |
| Battery Type | Coin Cell |
1 Minimum # of data points with all measurements enabled, actual results depend on enabled measurements.
2 Continuous use in a connected state until battery failure, actual results will depend on sample rate, active measurements, and battery condition.
3 Logging until battery failure, actual results will depend on sample rate, active measurements, and battery condition.
* Normal classroom use is the sensor in active use for 20min/lab for 120 lab periods/yr.
Data Collection Software
This product requires PASCO software for data collection and analysis. We recommend the following option(s). For more information on which is right for your classroom, see our Software Comparison: SPARKvue vs. Capstone »
Connectivity Options
This product can connect directly to your computer or device with the following technologies. No Interface required. See the following guide for details regarding device compatibility: Wireless Bluetooth Product Compatibility »
Dedicated Datalogging with SPARK LXi2
Consider an all-in-one, touchscreen data collection, graphing, and analysis tool for students. Designed for use with wired and wireless sensors, the SPARK LXi2 Datalogger simultaneously accommodates up to five wireless sensors and includes two ports for blue PASPORT sensors. It features an interactive, icon-based user interface within a shock-absorbing case and arrives packaged with SPARKvue, MatchGraph!, and Spectrometry software for interactive data collection and analysis. It can additionally connect via Bluetooth to the following interfaces: AirLink, SPARKlink Air, and 550 Universal Interface.
Buying Guide
| Recommended Accessories | P/N | |
|---|---|---|
| Storage for Wireless Temperature, pH and Conductivity Sensors | PS-3585 | |
| pH Buffer Capsule Kit | SC-2321 | |
| Electrode Support | PS-3505 | |
| Magnetic Stirrer | SE-7700 | |
| PASCO Micro Stir Bar (5 Pack) | PS-2565 |
| Parts Available Separately | P/N | |
|---|---|---|
| Oxidation Reduction Potential Probe | PS-3515 | |
| Flat pH Probe | PS-3514 | |
| Chloride Ion Selective Electrode | PS-3519 | |
| Carbon Dioxide Ion Selective Electrode | PS-3517 | |
| Potassium Ion Selective Electrode | PS-3520 | |
| Calcium Ion Selective Electrode | PS-3518 | |
| Ammonium Ion Selective Electrode | PS-3516 | |
| Nitrate Ion Selective Electrode | PS-3521 |
| Replacement Parts | P/N | |
|---|---|---|
| Soaker Bottle Replacement pH/ISE (5 Pack) | SE-3408 | |
| pH Electrode | PS-2573 | |
| pH Storage Solution | SC-3507 | |
| Coin Cell Battery Pack | PS-3504 |
| Also Available | P/N | |
|---|---|---|
| Wireless Drop Counter | PS-3214 | |
| Heater Stirrer | PS-3401 |
Product Guides & Articles
AP Chemistry Lab Manual Overview
Authored by chemistry educators, the Advanced Chemistry Through Inquiry Teacher Lab Manual includes sixteen guided inquiry labs that cover AP Chemistry course concepts such as Moles and Molar Mass, Stoichiometry, and Reaction Rates.
pH Sensors & Probes
A pH sensor is a type of probe used to measure the pH of solutions in chemistry, biology, and other science applications. pH probes are often used to determine the basicity or acidity of an aqueous solution.
Acid-Base Chemistry
Acid-base chemistry is present everywhere in our daily lives. Many substances are acidic and basic, while others are neutral. The determining factor that makes a substance an acid or a base is the amount of hydrogen ions or hydroxide ions present.
Titration
A titration is a chemical analysis in which a researcher determines the concentration of a chemical solution (analyte or titrand) by adding a measured volume of standard solution (titrant) until the produced reaction reaches the equivalence point.
Experiment Library
Perform the following experiments and more with the Wireless pH Sensor.
Visit PASCO's Experiment Library to view more activities.
Membrane Permeability (pH sensor)
Students use a pH sensor to explore which substances can and cannot pass through a cell membrane model.
pH of Household Chemicals
In this lab, students will use a pH sensor and common household chemicals to relate pH and hydronium ion (H₃O⁺) concentration. Students will classify solutions as acidic, basic, or neutral.
Acid's Effect on Teeth
In this lab, students will use pH sensors to quantitatively describe the acidity of various beverages.
Acid Rain and Weathering
Students will use a pH sensor and vinegar to model the effects of acid rain on various materials.
Diffusion
Students use a pH sensor to investigate the diffusion of hydrogen ions through a semipermeable membrane, comparing the rates of diffusion for two solutions that differ in their acidity.
Carbon Cycle Chemistry
How does pH data provide evidence of the chemical reactions that cycle carbon through water, air, land, and life forms? In this investigation, students use pH sensors to indirectly track the movement of carbon through the biosphere...
Soil Characteristics
In this lab, students will use a pH sensor to investigate the pH of different soil samples.
Investigation of Acid-Base Titrations
Students compare the pH titration profiles of strong, weak and polyprotic acids.
Physical and Chemical Changes
Students use Wireless sensors (pH, conductivity, temperature, and pressure) with Chemvue software to characterize changes in matter as either physical or chemical and develop models of particle interactions.
Titration Curves
Students will use a pH Sensor and a Drop Counter to explore the shape of a titration curve produced by the titration of a strong acid and a weak acid by a strong base.
Buffers in Biological Systems
Students use a pH sensor to explore the effect buffers have on the ability of a cell to maintain homeostasis
Acid Rain
Students use a pH sensor to measure the impact atmospheric pollutants have on rainfall and plant growth.
Support Documents
| Manuals | ||
|---|---|---|
| Wireless pH Sensor Reference Guide | English - 458.34 KB | |
| Safety Sheets | ||
| Lithium Battery Safety Data Sheet | English - 129.01 KB | |
| Wireless pH sensor KCl solution | English - 404.70 KB | |
| Knowledge Base | ||
| How do I troubleshoot connecting a wireless sensor? | Dec 13th, 2024 | |
| Windows asks for a PIN number when connecting wireless sensor or device | Feb 5th, 2025 | |
| Android asks for a PIN number to pair a wireless device to system | Aug 29th, 2023 | |
| Emergency calibration standards for pH sensors | Apr 14th, 2022 | |
| How to install the Data Streamer app extension within Microsoft Excel | Apr 5th, 2023 | |
| Managing cap for soaker bottles | Mar 1st, 2024 | |
| pH Electrode Maintenance | Jul 22nd, 2024 | |
| Proper preparation of coin cells for recycling | Dec 12th, 2022 | |
| Two pH sensors are not reading the same value when tested in the same solution after calibration | Feb 27th, 2025 | |
