It's well known that that flavour of the fizz changes between a bottle and a drinks can, and the shelf life changes as well. Surprisingly, these differences arise from exactly the same cause - Permeability. Fortunately, although the science behind this is "challenging", Versaperm has a simple solution that helps manufacturers deal with it. Both flavour and shelf-life problems are caused because carbon dioxide permeates out through the material sides of the plastic bottle, the cap and the can. It does this at different rates so, within twelve weeks, a plastic bottle can lose up to 15% of its carbon dioxide fizz!
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