Your search for "ph electrode" revealed the following:

Fluke 726 Precision Multifunction Calibrator for industrial process calibration
Fluke 726 process calibrator for transmitter, valve and process instrument testing
Fluke 707 Current Loop Calibrator for 4–20 mA measurement, sourcing and simulation
Fluke 707 4–20 mA loop calibrator for transmitter calibration and process loop testing
Fluke 707 Current Loop Calibrator
$1,180.00
No reviews
Fluke 715 Volt/mA loop calibrator for 4–20 mA and voltage signal calibration
Fluke 715 Volt/mA Loop Calibrator
$1,334.00
No reviews
Fluke 719 Pressure Calibrator with built-in electric pump for pressure calibration
Fluke 719 Pressure Calibrator for pressure transmitter and pressure switch testing
Fluke 719 Pressure Calibrator
$4,000.00
No reviews
Endress+Hauser CPA871 retractable assembly
Endress+Hauser CPA871 process sensor assembly
Endress+Hauser Prosonic FDU91 ultrasonic sensor for non-contact level and flow measurement
Endress+Hauser CUS52D digital turbidity sensor
Fluke 1507 Insulation Resistance Tester
ABB Sensyflow FMT200-ECO2 thermal mass flowmeter
ABB FMT200-ECO2 thermal mass flowmeter front view
Endress+Hauser Memosens CCS58E ozone sensor
Endress+Hauser CCS58E Memosens digital ozone sensor
Fluke 1524 Handheld Thermometer Readout for precision temperature measurement
Fluke 1524 precision thermometer readout for PRT, RTD and thermocouple measurement
Endress+Hauser Condumax CLS16B conductivity sensor
Endress+Hauser CLS16B conductivity sensor front view
Endress+Hauser CA78 low-range TOC analyzer
Endress+Hauser CA78 online TOC analyzer front view
Endress+Hauser Prosonic FDU92 ultrasonic sensor for long-range non-contact level measurement