molaarmass, mis viitab proovis olevate polümeeriahelate keskmisele massile, mis arvutatakse iga ahela massi ja ahelate arvu korrutise liitmisel ning jagamisel ahelate koguarvuga., average mass of polymer chains in a sample, calculated by summing the product of each chain's mass and number of chains, and dividing by the total number of chains
