Section 864.9575 - Environmental chamber for storage of platelet concentrate(a)Identification. An environmental chamber for storage of platelet concentrate is a device used to hold platelet-rich plasma within a preselected temperature range.(b)Classification. Class II (special controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to § 864.9 .45 FR 60648, Sept. 12, 1980, as amended at 63 FR 59226, Nov. 3, 1998