BioChem 1stRespondER Desktop - Version 1.6 BioChem 1stRespondER (tm) is designed to help healthcare professionals deal with chemical and biological warfare attacks. New in v1.6: New Chemical agents: Agent 15, Arsene, Chlorine, Oleoresin Capsicum (OC Pepper Spray), Tear Gas (CS), other irritants, Vomiting Agents DM, DA, DC. New Biological agents: Burkholderia (Glanders, Melioidosis), Staphylococcal enterotoxin B.