Bisphenol A (BPA) is a substance that occurs in numerous products. BPA is used in plastics for i.e. construction material, electronics, plastic bottles, (food)packaging material, toys and medical devices. BPA is also used as a base for epoxy-coatings, adhesives and in specific dental care products and as a dye developer in thermal paper, such as cash register receipts. Excessive BPA exposure is harmful to fertility and can affect the hormone system.