Defective Redox Survey: Technical Advice and Guaranteed Replacement

Client:
Hello,

Technical Advisor:
Hello,

Client:
I bought a redox probe for maestro in April. For the past two days, the redox value has been almost zero (while the usual target is 770mV).

Client:
I performed a calibration with the two appropriate solutions. The system is well calibrated, so I conclude that the probe is working.

Client:
I'm seeking advice from you regarding the cause of such a low value.

Technical Advisor:
It's a faulty probe. If you bought it from us, we will replace it for you.

Technical Advisor:
Your name, please.

Client:
JEAN-PIERRE

Client:
What I don't understand is that both calibration tests are successful... How do you explain that?

Technical Advisor:
Yes, that's possible because if you calibrate a faulty probe, it can deceive the device.

Technical Advisor:
Your last name?

Client:
It's JEAN-PIERRE, the order number was EHXBOIPZQ.

Technical Advisor:
OK! One moment.

Technical Advisor: