. If you have any questions, please let us know.

Hello, what is the difference between redox solution 468 and 650
Me my dosing pump displays 890 yet little chlorine in the pool. The green cap that is sold with your solution is used to plug the hole in the probe during the calibration.
Swimming pool with a high shelter

Hello

You have to look at the manual of your regulator, it should be written the value of the buffer you need to carry out the calibration

The value of 890 mV may be true

Oh very well thank you

If you have a buffer solution soaked the probe in it and you should read the value from the solution if calibration has been done

Yes, the cap is for that.

Ok but that doesn't matter, I have to do the tests with more reliable drops. Yes after my solutions are 3 years old. Otherwise not bad if the value is 890

Nope

Ok so I continue like this for the tests

Thanks