Frictional

... produced due to electrostatic force is same for all molecules at equal distance from electrodes And the retardation produced due to the frictional force of gel is only different for different molecules. frictional force is larger for larger molecules & smaller for smaller ones , ...

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... normally use a gel support for the fluid phase. Examples of gels used are starch, acrylamide, agarose or mixtures of acrylamide and agarose. Frictional resistance produced by the support causes size, rather than charge alone, to become the major determinant of separation. Smaller molecules ...

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