Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number E-Z EM'S CATA PG 7250 found under Barium Sulfate Susp by E Z Em Inc. The National Stock Number assigned to this part is 6505013503554, 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 EM'S CATA PG 7250.