acid addition calculation

[slim chillingsworth]

has anyone worked out a formula for exact phosphoric acid addition based on pH? i tried converting Noonan's from New Brewing Lager beer, but got lost in the math after realizing that he calculates for an 80% phosphoric acid solution compared to the 10% available most places.

 

[conpewter]

I have some phosphoric and plan to do this on my next lighter brew still looking up the calculations myself, I ran into the same 80% issue, but we should just be able to add 8 times as much 10% solution I'd imagine.