Procedure A is used to determine the melt flow rate
(MFR) of a thermoplastic material. The units of measure are
grams of material/10 minutes (g/10 min). It is based on the
measurement of the mass of material that extrudes from the die
over a given period of time. It is generally used for materials
having melt flow rates that fall between 0.15 and 50 g/10 min
(see Note 1).