Chemistry: electrical and wave energy – Apparatus – Coating – forming or etching by sputtering
Patent
1990-01-25
1991-10-01
Niebling, John F.
Chemistry: electrical and wave energy
Apparatus
Coating, forming or etching by sputtering
2041801, G01N 2726, B01D 5702
Patent
active
050531158
ABSTRACT:
An electrophoresis instrument includes a capillary tube mounted in an air cooled cartridge. The cartridge also supports a spherical lens which is part of the optical detection apparatus. The cartridge rests in a manifold which includes the sample and buffer reservoirs. The temperature of the capillary tube is controlled by measuring the electrical resistance of the capillary tube during the electrophoresis process and then cooling or heating the cartridge by circulating temperature controlled air over the tube. The optical path associated with the instrument is a fiber optic bundle bifurcated close to dual detectors into a reference arm and a sample arm so as to provide similar reference and sample optical paths. The instrument may be used for temperature control for gradient electrophoresis and also, a neutral marker for determining electro-osmotic flow may be automatically detected.
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Hlousek Louis
Weinberger Scot R.
Niebling John F.
Spectra-Physics Inc.
Starsiak Jr. John S.
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