Dialysis Tubing Visking Τubing
Dialysis tubing, also known as Visking tubing, is an artificial semi-permeable membrane tubing[1] used in separation techniques, that facilitates the flow of tiny molecules in solution based on differential diffusion. In the context of life science research, dialysis tubing is typically used in the sample clean-up and processing of proteins and DNA samples or complex biological samples such as blood or serums. Dialysis tubing is also frequently used as a teaching aid to demonstrate the principles of diffusion, osmosis, Brownian motion and the movement of molecules across a restrictive membrane.
Dialysis tubing is available in:
- 14mm
- 19mm
Characteristic | Description |
Molecular Weight Cut-off | 10.000 to 14.000 Daltons |
pH Stability Range | Stable in pH range 5 to 9 |
Protein Absorption | <1 ng/g of dry membrane |
Contaminants | Sulfur Compounds – <0.3% Heavy metals – <50ppm |
Temperature Resistance | Membrane can be sterilized by autoclave Membrane with aqueous solutions can be frozen |
Microbial Resistance | Membranes are sensitive to cellulase activity when humidified. Using a preservative like benzoate will control bacterial growth. |