Section 864.5350 - Microsedimentation centrifuge(a)Identification. A microsedimentation centrifuge is a device used to sediment red cells for the microsedimentation rate test.(b)Classification. Class I (general controls). This device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to the limitations in § 864.9 .45 FR 60598, Sept. 12, 1980, as amended at 59 FR 63007, Dec. 7, 1994; 66 FR 38789 , July 25, 2001