Identification of pH and Redox Probes: Conversation with a Technical Advisor

Client :

I just received the 2 regulauto pH and redox probes that I ordered. They are in the same box, one blue and one yellow: which one is redox? Which one is pH? Thank you!

Technical advisor:

Hello, the blue one is pH.

Client :

Thank you! Have a nice day!

Technical advisor:

Have a nice day.