| Apr 26, 2021, 7:09 am Hello, what is the shelf life of a calibration solution? |
| Apr 26, 2021, 7:11 am Ok, that's why I'm having trouble with calibration. Thank you |
| Not sure, 2 years is the recommended duration but you polluted the solution then it is possible. Have you checked your probe? |
| Apr 26, 2021, 7:13 am Yes, they are new and come from your home |
| Do you have a problem with the pH? |
| Apr 26, 2021, 7:16 am |
| Apr 26, 2021, 7:16 am This is the dosage of chlorine |
| Apr 26, 2021, 7:16 am |
| Apr 26, 2021, 7:19 am |
| Apr 26, 2021, 7:21 am |
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