Full Description

The method described is based on storing the test specimens in an atmosphere of (70 1) C and (62 1) % relative humidity (psychrometric temperature difference of (10 0,3) C), until moisture absorption by the specimen has reached at least 95 % of its equilibrium level. It is applicable to polyamides and copolyamides in grades containing fillers and other additives, but not to grades containing more than 2 % (m/m) extractables. The equilibrium moisture content attained is close to the equilibrium moisture content obtained in standard atmosphere 23/50.