Centrifuged material layer measurement in an evacuated tube

Details Centrifuged material layer measurement in an evacuated tube Centrifuged material layer measurement in an evacuated tube

1992-01-16

1993-10-12

Williams, Hezron E.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Content or effect of a constituent of a liquid mixture

73 6171, 73 6144, 210789, G01N 3348, B04B 504, B01D 2126, B01D 17038

Patent

active

052514749

ABSTRACT:
Centrifuged material layer measurements are made in an evacuated glass or clear plastic tube which contains a float. When possibly contaminated materials, such as blood, are being tested the use of the evacuated tube allows the measurements to be made without the technician being exposed to the blood. The tubes are large enough to hold approximately one ml of blood, and are filled with an inert gas at low pressure. The floats are formed with a through passage into which the cell bands to be expanded will settle during centrifugation.

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