In the lab, we never let water sit more than a minute or 2 before using a pH probe to test, but we also use magnetic stir bars to keep the sample moving as it was tested.
We were also required to calibrate the probe with known pH standards at each use to get an accurate reading.
To get a true reading of your tap water pH, I would go to your water supply company web site, and check effluent parameters.
We were also required to calibrate the probe with known pH standards at each use to get an accurate reading.
To get a true reading of your tap water pH, I would go to your water supply company web site, and check effluent parameters.
