GAOHOU PH0-14 Value Detect Sensor Module + PH Electrode Probe BNC For Arduino : Amazon.co.uk: Business, Industry & Science
0.00~14.00PH Probe Electrode with BNC Cable for Water,Pool,Hydroponics,Calibration Powder,Aquarium (300 cm Electrode) : Amazon.co.uk: Business, Industry & Science
The Combination pH Electrode | Process Analytics | Hamilton Company
Gedourain PH Electrode, PH Probe 0.00-14.00PH Convenient To Carry Plastic Shell for Dye Industry and Research Industry for Chemical Industry : Amazon.co.uk: Business, Industry & Science