Your search for "pH electrode" revealed the following:

Endress+Hauser CPS42E digital ORP sensor
Endress+Hauser CPS42E Memosens digital ORP sensor
Endress+Hauser CLS16E digital conductivity sensor
Endress+Hauser CLS16E hygienic conductivity sensor
ABB FAM3200 armored variable area flowmeter
ABB FAM3200 metal tube variable area flowmeter
Endress+Hauser CPS72E digital ORP sensor
Endress+Hauser CPS72E Memosens digital ORP sensor
Endress+Hauser CPA875 sterile retractable assembly
Endress+Hauser CPA875 hygienic process assembly
Fluke 709H precision mA HART loop calibrator for 4–20 mA testing and process transmitter calibration
Endress+Hauser Condumax CLS19 conductivity sensor
Endress+Hauser CLS19 conductivity sensor front view
Endress+Hauser Flowfit CPA25 flow assembly
Endress+Hauser CPA25 flow assembly for liquid analysis sensors
Endress+Hauser CPS62E Digital ORP Sensor
Endress+Hauser CPS62E Digital ORP Sensor
Fluke 1625-2 GEO Earth Ground Tester with Automatic Frequency Control
Endress+Hauser Liquiline CM14 panel transmitter
Endress+Hauser CM14 Memosens digital transmitter
Endress+Hauser Indumax CLS50 conductivity sensor
Endress+Hauser CLS50 inductive conductivity sensor
Endress+Hauser CLS21E digital conductivity sensor
Endress+Hauser CLS21E conductivity measurement sensor
Endress+Hauser CLS15E digital conductivity sensor