The chemicals used in Sterile Processing departments (SPDs) pose serious risks, and Alex Hilliker of ChemDAQ, Inc. believes that chemical safety is not discussed enough. In episode 125, host Jon Wood speaks with Hilliker, who explains the usage progression from ethylene oxide to hydrogen peroxide and glutaraldehyde to peracetic acid. Hilliker discusses the health hazards of working with these chemicals and the regulations and guidelines designed to protect workers from exposure. He reviews exact permissible exposure limits (PELs), methods of environmental and personnel monitoring, and the critical importance of chemical safety training.