ASTM D 3835 - 02 Standard Test Method for Determination of Properties of Polymeric Materials by Means of a Capillary Rheometer

American Society for Testing and Materials (ASTM). Current edition approved November 10, 2002. Published January 2003. Originally
approved in 1979. Last previous edition approved in 1996 as D 3835 – 96. This test method covers measurement of the rheological
properties of polymeric materials at various temperatures and shear rates common to processing equipment. It covers measurement
of melt viscosity, sensitivity, or stability of melt viscosity with respect to temperature and polymer dwell time in the rheometer, die swell ratio (polymer memory), and shear sensitivity when extruding under constant rate or stress. The techniques described permit the characterization of materials
that exhibit both stable and unstable melt viscosity properties.