Determining the use of green and blue electrodes: Technical Advisor's Guide

Client:
Hello, I just received my 2 electrodes: one green and one blue: which one is for pH and which one is for redox?
Thank you

Technical Advisor:
Hello, the pH probe is the Blue.

Client:
Ok, thank you

Technical Advisor:
Have a nice day

Client:
Hello, I just received my 2 electrodes: one green and one blue: which one is for pH and which one is for redox?
Thank you

Technical Advisor:
Hello, the pH probe is the Blue.

Client:
Ok, thank you

Technical Advisor:
Have a nice day