Imperforate bowl: centrifugal separators – Process
Patent
1997-03-10
1999-03-30
Kim, John
Imperforate bowl: centrifugal separators
Process
210 86, 210782, 210789, 356381, 494 10, G01B 1106, G01B 2108, B04B 1500, G01N 2100
Patent
active
058881840
ABSTRACT:
Centrifuged material layer volumes are measured and quantified during centrifugation of the material layers. The material layers are differentially highlighted, preferably by means of one or more fluorescent dyes or stains which are admixed with the sample being analyzed. This kinetic quantification procedure is particularly useful in performing differential blood cell and platelet counts. The blood sample is centrifuged while being subjected to a strobed light source. At least one photometric cell layer compaction measurement is made in conjunction with the light flashes so as to record a degree of cell layer compaction as the sample is being centrifuged. In certain cases, after several successive cell layer compaction readings are derived, a compaction curve is identified and the ultimate degree of cell layer compaction is calculated from the derived compaction curve prior to the achievement of the ultimate degree of cell layer compaction.
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Jones William W.
Kim John
Levine Robert A.
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