Understanding the difference between ORP 425 and 650 solutions: Tips for calibrating your tester.

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-