Chemistry: electrical and wave energy – Apparatus – Coating – forming or etching by sputtering
Patent
1992-03-13
1995-01-24
Czaja, Donald E.
Chemistry: electrical and wave energy
Apparatus
Coating, forming or etching by sputtering
2041801, 204300R, 215247, 215355, 422 63, 422 64, B01D 6146, B01D 5702, G01N 2726
Patent
active
053840240
ABSTRACT:
An instrument for capillary electrophoresis has a vertically translatable carrier holding one end of the capillary and an electrode connected to a power supply, and a rotary carousel for presenting containers of sample and buffer solutions to a load position where the end of the capillary and the electrode may be inserted by operating the carrier. The other end of the capillary and a second electrode connected to the power supply are immersed in an outlet buffer reservoir. The instrument has a vacuum supply for providing a relative vacuum over the solution in the outlet buffer reservoir, so simple material may be injected into the capillary either by electromigration or by differential pressure. After injection, the first end of the capillary and the electrode may be immersed in buffer to accomplish electrophoresis. By manipulating the carousel and carrier, multiple samples may be electrophoresed in series. In a preferred embodiment the instrument includes a flexible duck-billed septum for closing containers while permitting easy access for the electrode and the capillary tube. Also in a preferred embodiment the instrument is controlled by a microprocessor-based controller.
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Albin Michael S.
Kowallis Reid B.
Lee Thomas E.
Mead Dennis E.
Moring Stephen E.
Applied Biosystems Inc.
Boys Donald R.
Cano Milton I.
Czaja Donald E.
Smith Joseph H.
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