>>I wonder if someone could confirm this experience about the Nalgene >>bottles and clarify the issues with the various bottle plastics. > >Polycarbonate certainly can handle autoclave conditions without >significant reductions in apparent material properties. Aging of polycarbonate is accelerated by boiling etc. It can withstand autoclaving but there is loss in mechanical strength so Nalgene doesn't recommend use in centrifuges after "repeated" sterilization. I don't use their water bottles but do use their stuff in the lab. To what extent pouring boiling water into polycarbonate water bottles reduces their strength is hard to estimate but it does cause leaching (though apparently minimal) and the formation of microcracks. If Nalgene says its safe to do then its probably not a real problem and just something to be a little more careful about as long as you don't mind replacing your bottle after a while. Shin -- *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************Received on Tue Dec 05 2006 - 17:45:57 PST
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