Quote Originally Posted by rfeiller
The resins are in tanks ion exchange resins are used throughout the water Purification industries. In fact much of the time it is part of the bottled watet process. And I disagree about your statement on buffering capabilities of alkalis and acids.
But sir, I don't want to DRINK my AP water...

Aren't you using RO water? How would you get acids/bases with their conjugates in the water... You have ammonia in the water, but at a very low molar density... Also, you are discussing strong and weak acids, but you don't seem to draw a distinction between the two. You realize they act differently in solutions with or without a buffering solution present, yes?

Here are some good videos on buffer calculations:

Part 1: http://www.youtube.com/watch?v=hWkXoHqHyfs
Part 2: http://www.youtube.com/watch?v=rLPc8Rcxnmk
Part 3: http://www.youtube.com/watch?v=2fvD_kf_KIE

There are many things to consider in the interactions, and without specifics we can't really say for certain. However, it's not magic; there is sound science from which to base our decisions... pH interactions are probably one of the simplest (yet the most important) aspects of our AP systems...