Tinius Olsen MP1200 Extrusion Plastometer Page 14-4
Operation Manual # 02002215
Note: The melt density value is required to calculate Flow Rate in a Type B test. ASTM D1238
Table 3 lists melt density values for generic virgin PP (0.7386 g/cm3) & PE (0.7636
g/cm3). However, it is more accurate to measure the actual melt density of the specific
resin being tested. The procedure to do this is described in the following chapter. Do not
use the room temperature density normally stated in the material specifications which is higher.
14.2.14If the machine is equipped with an automatic cutter and if it is desired to use
it, press the ON button located next to Enable Auto Cut.
14.2.15Press on the Number of Captures box and use the keyboard that appears to
enter the desired number of captures.
Note: Generally, the first capture of 0.25 or 1.0 inch of travel is considered to be the ASTM
defined test result (the actual travel distance that is selected depends on the expected flow
rate of the material). However, the machine can be set up to take discrete measurements
(captures) at defined intervals within the 0.25 or 1.0 inch of travel.
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