Some "Bisphenol Free" Bottles Live Up to Their Claim
Scott M. Belcher, Ph.D., and James E. Cooper, Ph.D.
University of Cincinnati
NIEHS Grants RC2ES018765, R01ES015145, P30ES006096 and T32ES016646
University of Cincinnati researchers tested a variety of bottles claiming to be "BPA free" and found some conflicting results according to a new study. The study was prompted by consumer concerns and was conducted to see if bottles made of materials other than polycarbonate lived up to their claim or leached BPA into water stored in them for five days.
The bottles tested were obtained from retail sources and were made of polycarbonate, stainless steel, copolyester, aluminum with a copolyester lining, or aluminum with an epoxy resin lining.
As expected, the lab found that water stored in polycarbonate bottles contained BPA at the end of the five days. This confirmed previous results from the same lab. Aluminum bottles coated with an epoxy resin gave conflicting results depending on the manufacturer. Bottles obtained from discount stores released significantly more BPA.
The researchers conclude that just because a bottle is not made of polycarbonate that it is free of BPA. Some alternative bottles were indeed BPA free, but consumers should be wary.
Citation: Cooper JE, Kendig EL, Belcher SM. Assessment of bisphenol A released from reusable plastic, aluminum and stainless steel water bottles. Chemosphere. 2011 Jul 7. [Epub ahead of print]
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