Vernier Software and Technology
Vernier Software & Technology

Go Direct® Electrode Amplifier

Go Direct® Electrode Amplifier product image

The Go Direct Electrode Amplifier is a mV and pH amplifier that connects to Vernier electrodes and compatible third-party BNC electrodes. It connects via Bluetooth® wireless technology or via USB to your device.


The Go Direct Electrode Amplifier offers an affordable way to expand your experiment options. Its BNC connector provides the flexibility to attach and remove a Vernier electrode, such as the pH Electrode, Flat pH Electrode, ORP Electrode, ISE electrode, or a third-party electrode. You can explore pH one day and potassium concentrations the next.

Because the Go Direct Electrode Amplifier is compatible with third-party electrodes, students learn consistent calibration and handling techniques on one amplifier using one software program. When electrodes expire or become damaged you need only replace the electrode—lowering your overall equipment costs.

Rechargeable Battery—Ready When You Are

The robust rechargeable battery offers long battery life and provides always-ready operation when using the sensor wirelessly. Monitor battery life directly from our free Graphical Analysis 4 app or LabQuest 2 App. Should the battery run low, simply connect the sensor to the charging cable and keep on collecting—no interruptions or inconvenience to you or your students.

Wired or Wireless—The Flexibility to Choose

Our Go Direct sensors connect directly to your mobile device, Chromebook, or computer using our free Graphical Analysis 4 app—no additional equipment or software purchases are necessary. Go Direct sensors can be used wired via USB or wirelessly via Bluetooth® wireless technology, allowing you to choose the solution best for your classroom or laboratory.


  • Units: pH or mV
  • Input range (mV): ±1000 mV
  • Input range (pH): 0 to 14 pH
  • Accuracy with new electrode (mV): ±20 mV
  • Accuracy with new electrode (pH): ±0.2
  • Connections:
    • Wireless: Bluetooth
    • Wired: USB

View the Go Direct® Electrode Amplifier user manual


Compatibility Requirements

What’s Included

  • Go Direct Electrode Amplifier
  • Micro USB Cable

Ordering Information

All prices are for U.S. educators.

NameOrder CodePriceQuantity
Go Direct® Electrode AmplifierGDX-EAContact Us
Optional Accessories
Electrode SupportESUPContact Us
Go Direct® Charge StationGDX-CRGContact Us
Go Direct® Flat pH BNC ElectrodeGDX-FPH-BNCContact Us
Go Direct® Glass-Body pH BNC ElectrodeGDX-GPH-BNCContact Us
Go Direct® ORP BNC ElectrodeGDX-ORP-BNCContact Us
Go Direct® pH BNC ElectrodeGDX-PH-BNCContact Us


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 »

Go to top