Exchange between Client and Technical Advisor on the Replacement of a Regulator Probe

Client: Hello

Technical Advisor: Hello

Client: I think the probe of my regulator is faulty... it shows a pH level of 4. The probe is 8 years old.

Technical Advisor: That's likely. Test your probe like this here.

Client: The brand of the regulator is idi it regul. Okay, I'll check. If it's faulty, which probe should I buy?

Technical Advisor: Can you take a picture of your regulator and your probe? And the label on the side because I need to search. And your email too. Or do you think idoit?

Client:

Technical Advisor: Okay

Client:

Technical Advisor: This one