<P> Dialysis is a common laboratory technique that operates on the same principle as medical dialysis . In the context of life science research , the most common application of dialysis is for the removal of unwanted small molecules such as salts , reducing agents , or dyes from larger macromolecules such as proteins , DNA , or polysaccharides . Dialysis is also commonly used for buffer exchange and drug binding studies . </P>
where do we need to use the principle of dialysis
removal of unwanted small molecules buffer exchange and drug binding studies