Marker dye band detector for gel electrophoresis using balanced

Details Marker dye band detector for gel electrophoresis using balanced Marker dye band detector for gel electrophoresis using balanced

1992-11-30

1993-12-07

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

250573, 356344, H01J 4014

Patent

active

052685683

ABSTRACT:
A device for detecting the marker dye band which is used to monitor the progression of biological macromolecules in gel electrophoresis. This device mounts external to the gel box, and utilizes a single light detector and a pair of AC activated light sources. The light sources produce reflected or transmitted light signals which, when balanced at the detector, cancel. When marker dye is absent the light signals are balanced, and no signal is detected. When marker dye is present at a specific detection point within the gel, the light reflected (or transmitted) is no longer balanced and a signal is detected.

REFERENCES:
patent: 4534647 (1985-08-01), Gross et al.
patent: 5120419 (1992-06-01), Papp
patent: 5213673 (1993-05-01), Fujimiya et al.
Paul et al., "A Simple Optoelectronic Device for Controlling an Electrophoresis Apparatus", Univ. of Florida, May 1989.

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