I’ve just started to look into acidifying my sparge water. I have about 80 ppm hardness and read that lowering the alkalinity of sparge water might help improve my beers ( I batch sparge).
So, I use Bru’n water and love it, but I’m having some issues with pH readings with my water. My water’s pH, according to multiple Ward Labs reports, is right about 7.6. You’ll see the pic of the pH strip reading of my tap water in the pic: [attachment=2]March 2014 017.JPG[/attachment]
As an experiment, I treated 1/2 gallon of my tap water with 1.4 ml of phosphoric acid (10%), which according to Bru’n water should yield a pH of 5.5. However, as you see in the pic, it’s reading at 4.0…way beyond the expected pH.[attachment=1]March 2014 013.JPG[/attachment]
So, is this an issue with the pH strip, or something else? Both readings were taken in 73 degree water and soaked for a minute or two.
I’ve attached the screenshot of Bru’n water’s sparge page for this experiment. I followed the same procedure for a recent acid addition to an altbier. Just in case someone sees that I’m doing something wrong:[attachment=0]sparge acid.png[/attachment]