Vernier sells three different categories of pH sensor depending on the type of pH electrode used: standard, tris-compatible flat pH, and glass-body pH. Use the images to determine which sensor you have.
Note: The dates indicate the approximate time frame when these sensors were sold.

Standard pH Sensors

Go Direct® pH Sensor (GDX-PH)—current version


Go Wireless pH—sold from 2015 to 2017


pH Sensor (PH-BTA)—current version


PH-BTA—sold from 2006 to 2012


PH-BTA—sold from 2002 to 2006


PH-DIN—sold prior to 2002

Tris-Compatible Flat pH Sensors

Go Direct® Tris-Compatible Flat pH (GDX-FPH)—current version


Tris-Compatible Flat pH Sensor (FPH-BTA)—current version

Glass-body pH Sensors

Go Direct® Glass-Body pH Sensor (GDX-GPH)—current version


Glass-Body pH Electrode BNC (GPH-BNC)—current version

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