BPA Substitute Could Spell Trouble: Experiments Show Bisphenol S Also Disrupts Hormone Activity "BPA-free" stuff is made with plastic containing bisphenol S. ... BPS is now known to be used in everything from currency to thermal receipt paper, and widespread human exposure to BPS was confirmed in a 2012 analysis of urine samples taken in the U.S., Japan, China and five other Asian countries. Like…