>>2739061a tinned bottle would defeat my needs though, while it does require careful cleaning and upkeep for an unlined/untinned bottle, and copper toxicity could be a factor, the main reason i want this bottle, is so the water comes into contact with pure copper and over the course of a few hours should kill bacteria and even viruses. i can fill at a stream, and soon enough drink safe(r) water. no need to boil or filter :) or maybe i'll die...
