analüütiline metoodika, mille puhul molekulide või muude osakeste eraldamine toimub peamiselt nende hüdrodünaamilise ruumala alusel, kasutades mitte-absorbeerivat materjali, mille pooride mõõdud vastavad ligikaudselt eraldatavate osakeste efektiivsetele, a separation technique in which separation mainly according to the hydrodynamic volume of the molecules or particles takes place in a porous non-adsorbing material with pores of approximately the same size as the effective dimensions in solution of the molecules to be separated