CFR › Title 21 › Part 864 › §864.928521 CFR §864.9285Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Identification. An automated cell-washing centrifuge for immuno-hematology is a device used to separate and prepare cells and sera for further in vitro diagnostic testing.(b)Classification. Class II (performance standards).