Saw two articles from internet today that warned about the danger of Type 7 plastic water bottles that apparently leach bisphenol A (BPA) in hot liquids. However, I would suggest to be discerning about preliminary findings. Not sure if it is an ongoing water bottle manufacturers war. Anyway aluminium or stainless steel bottles might not be better given the reported tainted products and additives during manufacturing. I thought glass was actually the best but not practical as a traveling pack. Anyway for plastic bottle, someone in the internet suggested switching to a plastic bottle made from polyethylene that does not leach BPA.
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In December 2007, Vancouver-based Mountain Equipment Co-op became the first major Canadian retailer to pull polycarbonate containers from its store shelves. (University of Cincinnati Academic Health Center Communication Services/Canadian Press)A quick checking on bispherol A from wikipedia showed that the Type 7 plastics in question, when exposed to hot liquid leaches BPA out 55 times faster than it does under normal conditions, at up to 32 ng/hour. Also, Type 3 (PVC) could have BPA as antioxidant in plasticizers, if BPA is used during package forming.
Maybe the relevant experts and authorities could gives some insights
Mikey
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