9.5 Insert the die and the piston into the bore. Allow the
temperature of the cylinder, with the piston and die in place, to
stabilize within 60.2°C of the selected test temperature for at
least 15 min before starting a test. When equipment is used
continuously, it is not necessary to heat the piston and die for
15 minutes when runs of the same or similar material at the
same test temperature are being measured over a continuous
time frame, provided the piston and die are cleaned and
re-inserted into the bore within five minutes after removal from
the extrusion plastometer at the end of each test. If the piston,
or die, or both, are removed from the bore for longer than five
minutes, they shall be considered “cold” and the full 15
minutes heating stabilization time shall be required.