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Sep 11, 2023 at 10:01 comment added Chris H That is a much higher pH (because of the way the pH scale works). But it might not be real. Electronic pH meters are temperature-dependent and if no, or a wrong, temperature correction was used, the number could be way off. Only if the water was cooled to room temp and measured with the pH meter set to room temp, would I trust it. Of course other indicators of pH are available. They may also be temperature-dependent
Sep 10, 2023 at 19:48 history answered Rohit Gupta CC BY-SA 4.0