What is Residual Alkalinity?

[peebee]

Aww ,cwap. I was right first time, Chris had said the salts get altered "proportionally":

But I already know that won't add up. Ooo look, there was a typo in my earlier thread (said pH4.46 instead of 4.66). Doesn't mean my calculations are right though.

Time I poured me-self a beer.