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Hi Guys, love the show, big fan of the music too, I have a pH related question…I have a pressure sprayer, Aquaking 5 litre water sprayer, I pH my water to 6.4 and pour it into the pressure sprayer, then pump up the pressure and spray the water in to a cup to now double check my pH but now the pH is higher at 6.8 but why?

Any thoughts on what I’m doing wrong here, no matter how absurd would be really appreciated.

I have cleaned out the bottle and then several rinses of water.