Problem solving for low measurement values of a redox probe: A Technical Guide

Client:
Hello, my probe is no longer reaching above 300-400 mV.

Technical Advisor:
Hello. Try this test: https://ph-redox-pool.com/gb/content/17-is-my-redox-probe-out-of-order. Then immerse the probe in the standard solution and read the value.

Client:
475mV solution? Okay, I bought it from you just last year.

Technical Advisor:
Perform the tests and let me know the results.

Client:

Technical Advisor:
Test the sensor, that's the only way to know.