Robuta

https://www.flir.com/en-asia/products/ph305/
The Extech PH305 is an electrode capable of measuring pH, mV and temperature. For use with the PH300 Waterproof pH/mV/Temperature Kit, EC600 Waterproof...
extechphmvtemperatureelectrode
https://www.flir.com/en-in/products/601100/
The Extech 601100 is a PVC-bodied, easy-to-clean, flat surface pH electrode. The product is ideal for solid products with minimal moisture like cheese, soils,...
flat surfaceph electrodeextechflir