Balance is my preferred choice and to achieve balance make foods your first choice to ingest essential s nutrients, if you can!
If not supplement wisely using the known ratios of elements that exist in nature or did !
I don't really understand how someone consuming high nutrient foods and or supplementing with essential mi could possibly achieve a pH of 6.0 or lower and for how long would one be expected to maintain such a low pH without sacrificing nutrients.But I'm not surprised by this proposal.
Buffered refers to the use of alkalizing minerals to neutralize acids ,as in buffered aspirin uses magnesium or sodium to buffer the acidity of aspirin!