Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DIRECT BILIRUBIN R2 REAGENT found under Test Reagent Set Direct Bilirubin by Boehringer Mannheim Corp. The National Stock Number assigned to this part is 6550013556473, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like DIRECT BILIRUBIN R2 REAGENT.