Biatain AG Foam Filler 5x 8cm 5s Biatain AG Foam Filler is a soft & non-adherent foam, suitable even if skin surroundings are fragile or injured. In the presence of exudate, silver is continuously released into the wound bed for up to 7 days. Due to the silver release profile there is a continuous antimicrobial effect during the entire wear time of up to 7 days.