In an effort to provide our customers with a wide range of choices, Castleton Paper offers customers both standard and BPA-free thermal paper. Most brands of thermal paper and carbonless copy paper have Bisphenol A (BPA) as a component. BPA is used for color developing in carbonless copy paper and thermal paper including receipts, event and cinema tickets, labels, and airline tickets. Some environmental scientists believe exposure to this organic compound in large amount can have a negative effect upon health. However, a recent Swiss study determined dry finger contact with thermal paper containing BPA, for 10 hours per day, resulted in a maximum of roughly 1 microgram of BPA transferred to the forefinger and the middle finger. This amount is 42 times less than current safety guidelines.