The standard method ASTM D7029-09 is used to analyze unsaturated polyesters and vinyl esters. The results obtained depend on the type of resin and initiator as well as the age of resin and initiator used in the test method. The method determines the reactivity of different polyester and vinyl ester resins. It helps predict the performance of the resin at the test. The values reported are in SI units or inch-pound units.