Many scientists believe that exposure to BPA (a chemical used in many plastics) could cause developmental problems in developing babies yet some well known UK retailers were selling potentially dangerous baby bottles as recently as April this year.
We believe that it is important to give your baby the best start in life so on the times when you want to give expressed breastmilk, make sure you choose a BPA free baby bottle.
Wikipedia has some information on BPA – http://en.wikipedia.org/wiki/Bisphenol_A including the following:
Studies by the CDC found bisphenol A in the urine of 95% of adults sampled in 1988–1994 and in 93% of children and adults tested in 2003–04. Infants fed with liquid formula are among the most exposed, and those fed formula from polycarbonate bottles can consume up to 13 micrograms of bisphenol A per kg of body weight per day (?g/kg/day; see table below).[122