How does GPC measure polymer size distribution?

Points on GPC to measure polymer size distribution :

• The Gel Permeation Chromatography (GPC) technique determines polymer size distribution by measuring how long different molecular fractions take to travel through the gel-packed column.
• Each polymer fraction produces a characteristic retention time that reflects its effective molecular size in solution.
• These retention profiles are combined to generate a molecular weight distribution curve for the entire polymer sample.

Also check it out related content on GPC to know more about it.