ProSpore Ampoule is a self-contained Biological Indicator available for use in steam sterilization. It is ideal for use in validating the sterilization of volumes of liquid that take a longer time to reach sterilizing conditions. The Ampoule is filled with modified Soyabean, Casein digest broth containing bromocresol purple (acid) indicator. Complies with EN 866-7 and AAMI ST 19.