Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E-Z PAQUE HD 98 75 BASO4 340GR found under Barium Sulfate Diag by E Z Em Inc. The National Stock Number assigned to this part is 6505015653598, 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 E-Z PAQUE HD 98 75 BASO4 340GR.