But not as idiot proof. It's a toss up, one option gives you more, one option gives you harder to screw up.

Having been hypothermic, heatstroked and deydrated (not all three at once, obviously), I can say that anything beyond "2 tablets per quart" can get sketchy. I'm not alive becuase I'm skilled. I'm just too petty to give the skinny fellow with the sythe the satisfaction. :P

So I guess I should ask, if you have a PSP, this iodine solution, and either a milk bag or a Nalgene bottle, how does one keep the crystals out of your side of this? Filter?