Welldefined: assay results for over 50 components, with additional testing available US origin: sourced and processed in the United States with complete traceability to origin Ultralow endotoxin: ≤ 10 EU/mL endotoxin for reduced research and production risk Sterilefiltered: serial 40 nm filter process removes up to 8 logs viral challenge Postfiltration treatments: γirradiated and heatinactivated FBS options also available Virustested: broad virus panel testing in accordance with 9 CFR 113.53 Our highest quality FBS, HyClone USorigin defined FBS is 40 nmfiltered, virustested to 9 CFR standard, and supplied with an extensive biochemical profile.