Client:
Hello, I need to calibrate my pH probe. Which liquid should I use, pH7 or pH9, or both and in what order? Thank you.
Technical Advisor:
Hello. Do you have a CCEI system?
Client:
I don't understand your question.
Technical Advisor:
It's best to check the manual for your devices. Which controller do you have?
Client:
Thank you, but it's not indicated, that's why I'm asking. It's Astral Pool.
Technical Advisor:
But normally, it's pH 7 and pH 9. Do you know the model?
Client:
No.
Technical Advisor:
Look at the label on the side of your device.
Client:
Thank you anyway, I'll figure it out. Have a nice day.
Technical Advisor: