Apparatus and method for removing small molecules and ions from low volume biological samples
First Claim
1. An apparatus for lowering the ionic strength of a low volume solution used inthe electronic transport of nucleic acids, proteins, and/or cells comprising:
- a tubular molecular weight cut-off membrane having a lumen, ion exchange resin, and a chamber surrounding and housing said membrane and resin wherein said membrane has an entrance and an exit port leading through said chamber, said membrane further embedded in and amongst said resin, and said chamber having entrance and exit ports for exchanging a flowable material into and out of said chamber.
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Abstract
This invention provides an apparatus and method for desalting a low volume solution for use in connection with an electronically addressable microarray. The apparatus comprises a tubular molecular weight cut-off membrane embedded within a ion exchange resin filled chamber. The apparatus provides a very high surface to volume ratio of membrane pore surface to exchange resin capacity for absorbing charged molecules. The design facilitates the speedy removal of charged molecules from test solutions with the resultant desalted solution having a very low ionic strength suitable for use in the electronic transport of nucleic acids, proteins, and cells.
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Citations
18 Claims
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1. An apparatus for lowering the ionic strength of a low volume solution used in
the electronic transport of nucleic acids, proteins, and/or cells comprising: - a tubular molecular weight cut-off membrane having a lumen, ion exchange resin, and a chamber surrounding and housing said membrane and resin wherein said membrane has an entrance and an exit port leading through said chamber, said membrane further embedded in and amongst said resin, and said chamber having entrance and exit ports for exchanging a flowable material into and out of said chamber.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 18)
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8. An apparatus for lowering the ionic strength of a low volume solution used in
the electronic transport of nucleic acids, proteins, and/or cells comprising: - a tubular molecular weight cut-off membrane having a lumen, ion exchange resin, electrodialysis electrodes, and a chamber surrounding and housing said membrane, electrodialysis electrodes, and resin wherein said membrane has an entrance and an exit port leading through said chamber, said membrane further embedded in and amongst said resin, said chamber having entrance and exit ports for exchanging a flowable material into and out of said chamber, and said electrodes are positioned in a spaced axial alignment and on opposing sides of said chamber with respect to said membrane.
- View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
Specification