This International Standard describes a method for the determination of the molecular mass, expressed as polystyrene, and the molecular-mass distribution of polymers produced in solution which are completely soluble in tetrahydrofuran (THF) and which have a molecular-mass range from 5 x 10^3 to 1 x 10^6.
It is not the purpose of this International Standard to explain the theory of gel permeation chromatography.