Apparatus for preparative gel electrophoresis
First Claim
1. Apparatus for drawing solutes eluting from an open-ended tubular electrophoresis column having a given cross section into transfer tubing, said apparatus comprisinga porous plate and a dialysis membrane, both sized to span said cross section, said dialysis membrane being impermeable to said solutes;
- a collar adapted to receive said open end and to secure said porous plate and said dialysis membrane thereto;
a plurality of channels in said collar communicating the exterior of said collar with a plurality of loci along the interior wall thereof, said loci positioned to reside along the periphery of said open end of said tubular electrophoresis column when said collar is joined thereto; and
means for drawing fluid from said porous plate at a withdrawal site within the periphery thereof.
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Accused Products
Abstract
Emerging solutes from a preparative gel electrophoresis column are drawn into a narrow transfer tube through a collar which fits over the column end and secures a porous plate and dialysis membrane to the column end. The collar is provided with a series of channels running from the collar exterior to a series of locations on its interior wall based around the periphery of the porous plate. An external pump draws lower buffer solution into these channels and laterally through the porous plate to essentially located withdrawal tubing. The solutes emerging from the tubing are then directed to a fraction collector.
40 Citations
22 Claims
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1. Apparatus for drawing solutes eluting from an open-ended tubular electrophoresis column having a given cross section into transfer tubing, said apparatus comprising
a porous plate and a dialysis membrane, both sized to span said cross section, said dialysis membrane being impermeable to said solutes; -
a collar adapted to receive said open end and to secure said porous plate and said dialysis membrane thereto; a plurality of channels in said collar communicating the exterior of said collar with a plurality of loci along the interior wall thereof, said loci positioned to reside along the periphery of said open end of said tubular electrophoresis column when said collar is joined thereto; and means for drawing fluid from said porous plate at a withdrawal site within the periphery thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. Apparatus for preparative electrophoresis, comprising:
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a gel enclosure open at opposite ends; upper and lower buffer chambers and means for imposing an electric potential therebetween, said upper buffer chamber adapted to contain an upper buffer solution and to place said upper buffer solution in fluid contact with a first open end of said gel enclosure, and said lower buffer chamber sized to contain a lower buffer solution and to permit immersion of a second open end of said gel enclosure therein; a porous plate and a dialysis membrane, both sized to span said second open end, said dialysis membrane being impermeable to said solutes; a collar adapted to receive said second open end and to secure said porous plate and said dialysis membrane thereto; a plurality of channels in said collar communicating the exterior of said collar with a plurality of loci along the interior wall thereof, said loci position to reside along the periphery of said second open end of said tubular electrophoresis column when said collar is joined thereto; and means for drawing fluid from the interior of said collar at a withdrawal site within the periphery of said porous plate to a location outside said lower buffer chamber. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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Specification