Sorry if this has been asked, I did a search and only received one thread, but at what point do you stop swishing the pHep5 in the water and take the reading?
The instruction manual only states to swish it for a few seconds and to make sure the stability icon is displayed. Well, if I do that, I get a reading of 7.54, however I can keep swishing and get a reading of 7.12. The stability icon is displayed the entire time. So, do I just keep swishing and hope the display stops changing?
