I mean optimal amount of anything is non zero. Trying to get 0% of anything, so getting anything 100% pure is next to impossible. Near hundred (99.9 repeat n) i

I mean optimal amount of anything is non zero. Trying to get 0% of anything, so getting anything 100% pure is next to impossible. Near hundred (99.9 repeat n) is useful but is always not cost effective or possible as n tends to inf.