Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Transparent
Patent
1995-05-02
1997-07-08
Drodge, Joseph W.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Transparent
210136, 210789, 356246, 422 72, 422100, 422101, 422103, B01D 1712
Patent
active
056457154
ABSTRACT:
A fractionation apparatus has a displaceable piston operably mounted for displacing liquids from a centrifuge tube as the piston is inserted therein. The fractionation apparatus has a collection tip which has a seal for sealingly engaging an inner wall of the tube and has an axially extending passageway for passing liquids from within the tube to a collector as the piston is inserted into the tube. The passageway is generally a trumpet shape having a wide end and a narrow end. The wide end is presented to the liquids and the narrow end connects to the collector. The trumpet shape enhances laminar flow through the collection tip and reduced unwanted mixing between layers during fractionation.
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Anderson, N.G., Bond, H.E., Canning, R.E.: "Analytical Techniques for Cell Fractions: I. Simplified Gradient Elution Programming", Analytical Biochemistry 3, pp. 472-478 (1962).
Candler, E.L., Nunley, C.E., Anderson, N.G.: "Analytical Techniques for Cell Fractions VI. Multiple Gradient-Distributing Rotor (B-XXI)", Analytical Biochemistry 21, pp. 253-258 (1967).
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Coombs, D.: "Density Gradient Fractionation by Piston Displacement", Analytical Biochemistry 68, pp. 95-101 (1975).
"Model 139 Gradient Fractionator and Model 150 Motor Controller, Owner's Manual", Biocomp Instruments, Inc., Fredericton, Canada (1995).
Biocomp Instruments Inc.
Drodge Joseph W.
Fors Arne I.
Horne D. Doak
Imai Jeffrey T.
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