Bioendo’s Endotoxin Challenge Vials (Endotoxin Indicator) is produced without excipient, and will not be carbonized under high temperature. Bioendo’s Endotoxin Challenge Vials (Endotoxin Indicator) are designed to indicate a minimum 3-log reduction. With table potency, it could be detected with gel-clot, turbidimetric, or chromogenic TAL.