A potentially harmful chemical which is commonly found in plastic baby feeding bottles is set to be banned from manufacture in 2011. Similar bans have been imposed in other countries after tests showed Bisphenol A (BPA) can leach from bottles into baby milk with damaging results.There is no hard evidence that it can harm humans but will be banned from baby bottles from March 2011 as a precaution.Tests show that humans are exposed to only tiny amounts of BPA. Most of this is in food which the body easily breaks down and excretes BPA.