Its ability to selectively diffuse molecules across a semi-permeable membrane gives dialysis tubing its important place in classic laboratory technique. Dialysis is used for a wide variety of applications: desalting, buffer exchange, removal of labeling reagents, drug-binding studies, cell growth and feeding, virus purification, and blood treatment. Created from a natural source of cellulose, dialysis tubing provides a reliable source for separating molecules based on size for testing purposes, and no pre-treatment is required before use.
Dialysis membrane Spectra/Por® 1
Supplier: SPECTRUM CHROMATOGRAPHY
MWCO 6 to 8 kD, regenerated cellulose.
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Dialysis membrane Spectra/Por® 4
Supplier: SPECTRUM CHROMATOGRAPHY
MWCO 12 to 14 kD, regenerated cellulose.
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Dialysis membrane Spectra/Por® 2
Supplier: SPECTRUM CHROMATOGRAPHY
MWCO 12 to 14 kD, regenerated cellulose.
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Dialysis systems Spectra/Por® Float-A-Lyzer® G2
Supplier: SPECTRUM CHROMATOGRAPHY
Ready-to-use laboratory dialysis systems featuring proprietary Ultra-pure Biotech Cellulose Ester (CE) Membrane. Biotech Grade CE is a low protein-binding synthetic membrane available in 9 precise MWCO's with no heavy metal and sulfide contaminants. The cylindrical tubing geometry prevents sample dilution (associated with cassette-type devices) and provides open access for total volume retrieval by pipette. Only the Float-A-Lyzer® G2 assures a 95 to 98% sample recovery while maintaining 99% sample purity and <1% sample dilution. The leakproof screw-on cap with sealing o-ring provides easy access with included pipette for loading, in-process testing and sample retrieval, without the risk of needle punctures. The included floatation ring improves sample buoyancy and vertical orientation during dialysis. The sleek design allows multiple samples to be dialysed in the same reservoir.
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Dialysis cassettes, Slide-A-Lyzer®, Pierce®
Supplier: Thermo Fisher Scientific
These devices can be used for a wide range of applications including low molecular-weight contaminant removal, buffer exchange, desalting, equilibrium dialysis, and concentration. The cassette membrane is composed of low-binding regenerated cellulose and features a hermetically sealed sample chamber to maintain the highest possible sample retention. This type of membrane is compatible with a number of common chemicals and buffers. The colour-coded transparent frames of the Slide-A-Lyzer® cassette allow instant recognition of the MWCO of the membrane and make viewing the needle easier during sample injection.