21 C.F.R. § 864.8150 Calibrator for cell indices.
Title 21 - Food and Drugs
(a) Identification. A calibrator for cell indices is a device that approximates whole blood or certain blood cells and that is used to set an instrument intended to measure mean cell volume (MCV), mean corpuscular hemoglobin (MCH), and mean corpuscular hemoglobin concentration (MCHC), or other cell indices. It is a suspension of particles or cells whose size, shape, concentration, and other characteristics have been precisely and accurately determined. (b) Classification. Class II (performance standards). [45 FR 60631, Sept. 12, 1980]
Title 21: Food and Drugs
PART 864—HEMATOLOGY AND PATHOLOGY DEVICES
Subpart I—Hematology Reagents
§ 864.8150 Calibrator for cell indices.
