Client :
Hello, what is the difference between the orp 425 and 650 solutions?
Technical Advisor :
Hello. It's just a difference in value. You should use the value indicated in your user manual.
Client :
Ah, I see. I will look for it. Because I have a tester that measures pH, chlorine, orp... But there is no orp solution provided for calibration. Only pH solutions are provided.
Technical Advisor :
Yes, that is possible because sometimes there is no redox calibration.
Client :
So the redox value is displayed and it is very low. And the chlorine value is incorrect. So I was thinking that with an orp solution it would adjust everything.
Technical Advisor :
What device do you have? What orp value do you have?
Client :
It's a small BLE Yc01 device.
Technical Advisor :
What orp value do you have?
Technical Advisor :
You can test the ORP (REDOX) measurement like this: https://sonde-ph-redox-piscine.fr/content/17-ma-sonde-redox-est-elle-hors-service-