Measurement of small heavy constituent layer in stratified mixtu

Details Measurement of small heavy constituent layer in stratified mixtu Measurement of small heavy constituent layer in stratified mixtu

1985-03-29

1986-02-04

Levy, Stewart J.

Measuring and testing

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

Content or effect of a constituent of a liquid mixture

73149, 73 614, 436 70, 422 55, 422 59, B01D 2126

Patent

active

045677549

ABSTRACT:
A complex liquid, such as a biological liquid, is stratified, as by centrifugation in a tube, into constituent layers. The most dense or heaviest constituent layer is measured volumetrically by physically expanding the entire layer with a cylindrical float which is inserted in the tube and which occupies the portion of the tube also occupied by the constituent layer being measured. The axial extent of the expanded layer is measured to provide an indication of the volume of the layer being measured. The end of the tube proximate to the layer being measured contains a plug of a more dense material which is immiscible with the subject liquid and into which the float will settle during centrifugation. The float thus settles into the plug of dense material and "floats" therein so as to extend through the entirety of the layer being measured.

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