Liquid purification or separation – Flow – fluid pressure or material level – responsive – Vent control
Patent
1985-05-20
1986-07-29
Sever, Frank
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Vent control
210359, 210406, 210515, 210516, 210927, B01D 3300
Patent
active
046029958
ABSTRACT:
New and improved, liquid level adjusting and filtering device is provided, and is operable upon insertion into a container to automatically adjust the level of a liquid as contained in the container to a predetermined, precisely repeatable location, and to filter the thusly level-adjusted liquid. The device is particularly adapted for use in conjunction with test tube-like devices, in the nature of those marketed under the Trademark "Vacutainer" by the Becton-Dickinson Company of East Rutherford, NJ, containing whole blood samples which have been separated as by centrifugation into respective blood cell, buffy and blood serum layers; and is operable in that context to present blood serum samples to automated sample analysis systems at the same predetermined and precisely repeatable location relative to the aspirating probe means of such systems.
REFERENCES:
patent: 3481477 (1969-12-01), Farr
patent: 3512940 (1970-05-01), Shapiro
patent: 3661265 (1972-05-01), Greenspan
Cassaday Michael M.
Herron Rand
Smith John L.
Uffenheimer Kenneth F.
Cartiglia James R.
Gorman, Jr. Edward H.
Romano, Jr. James J.
Sever Frank
Technicon Instruments Corporation
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