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MicroFET pH ISFET probe incl. free app

The conditions for purchases, deliveries and returns are described in our Terms and Conditions.

The package includes:

  • ISFET probe consisting of the transmitter, ring and the MicroFET replaceable sensor part.
  • Charger with USB cable
  • Tooth brush for cleaning purposes

You would need to gather yourself (or purchase separately in the shop):

  • Mobile device (Bluetooth5.0 or higher; Android, HarmonyOS, iOS)
  • Adapter for USB charger to connect USB cable of charger to socket
  • Calibration pH buffers
  • Demineralized water
  • Eventually some labware like beakers and tissues

PS See our manual how to unpack and get started for your pH measurements. 

MicroFET pH Probe

  • Article number: 9370-100
  • Probe with 3 mm diameter barrel that fits in test tubes and mini-cuvettes.
  • Total length of probe is 252 mm; length of just the replaceable (c.q. immersible) sensor part is 110 mm.
  • ISFET (Ion Sensitive Field Effect Transistor) pH sensor: glass-free, robust and dry storage capabilities
  • Gel-filled reference chamber for stable and accurate pH measurements
  • ATC, Automatic Temperature Compensation for the calibration procedure thanks to integrated NTC temperature sensor in the tip
  • Wireless chargeable battery (charger and USB cable included; charger adapter not included). Charging will need 2 hours for a 2-3 weeks operation time
  • Compatible to the free Sentron app for Android, HarmonyOs and iOS: app for intuitive calibration, acquisition, visualization and export of measurement data of multiple probes at the same time
  • BLE (Bluetooth Low Energy) wireless connection to mobile device; flexibility to move away up to 50-meters while your mobile device remains at one location
  • Temporary data storage in the probe the when mobile device is disconnected or out of reach
  • RGB LED for status update
  • Durable: the replaceable sensor part is easily interchangeable from the probe by plug and screw
  • IP67 dust and waterproof

See the specification table in our wireless ISFET pH probe manual for all specifications.

Probably also good to add


MicroFET pH probe: the laboratory probe for wireless, durable, non-glass pH measurements. Its very small 3 mm diameter enables fit in test tubes and mini-cuvettes.

Turn your own mobile phone into a full-featured pH meter. Download the free Sentron app at your phone and connect this pH ISFET probe through Bluetooth. Get guided through the calibration and measurement settings. Check the manual for this wireless ISFET pH probe at our website: manuals and technical guides.

The probes with the ISFET pH sensor of Sentron are robust, accurate and can be stored dry. They are durable as the sensor part is replaceable and interchangeable with other Sentron sensor parts. Moreover, they are automatic temperature compensated (ATC) for the calibration procedure.

Monitoring pH was never that easy!

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Category: SKU: 9370-100 Tags:


MicroFET pH ISFET probe incl. free app


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Wireless and durably interchangeable

Wireless and durably interchangeable, our premium pH probe enables you monitor this essential parameter in whatever application, whenever you want, wherever you are.

Frequently Asked Questions

Thanks to the ISFET technology the pH sensors are robust and can be stored dry. This has a great benefit for applications like water quality measurements in stream beds and tidal areas, where the water level changes in time and the probe will occasionally be above the water level. 

The glass-free approach makes the pH also available for inline food processes and medical applications like gastro-enterology, for which any glass splinter could be fatal.

The new product line is a wireless product line. No cable and thus more flexibility. No limitation of 1 probe per meter at a maximum 1,5 meter distance anymore! The Bluetooth connection enables you to have several meters within the mobile and the probe. Unlimited numbers of probes can be connected and read out simultaneously. Additionally the features of your phone can be used: GPS, social media, cloud service, etc.

Additionally we’ll release a multisensor on the market in the near future. This probe for pH, EC and ORP can be added up to the number of probes connected to your mobile device.

The connection between the probe (/transmitter) and the mobile phone is dependent on the Bluetooth signal. We have used a powerful approach for this, enabling a distance of maximum XX meter through the air. 

Let’s get connected and see whether we have a match. Please refer to / and we’ll contact you as soon as possible.

Besides the standard product line we are also providing contract development and contract manufacturing of sensor assemblies. More information on this is provided at Sensor Integration Services

Additional information


Benchtop, Handheld




Laboratory, Industrial, Environment