What Is a Dialyzing Membrane?

Dialysis tubing, also known as Visking tubing, is an artificial semi-permeable membrane tubing used in separation techniques, that facilitates the flow of tiny molecules in solution based on differential diffusion.

What is the purpose of a dialyzing membrane?

Purification of protein solutions

Dialysis is a commonly used laboratory-scale process to remove salt, or reduce the salt concentration, from a solution. A semi-permeable membrane is used to contain the target protein.

What can pass through a dialysis membrane?

The dialysis membrane is one of the critical components that determine dialysis performance. These membranes allow only low-molecular-weight molecules, such as sodium, potassium, urea, and creatinine, to pass through while blocking proteins, such as albumin, and other larger molecules.