EXPLANATION
This test method covers the determination of pour point of petroleum products by an automatic instrument that tilts the test jar during cooling and detects movement of the surface of the test specimen with an optical device. This test method includes the range of temperatures from -57 to +51° C. Test results from this test method can be determined at 1 or 3 ° C intervals. This test method is not intended for use with crude oils. The applicability of this test method has not been verified for residual fuel samples.
TEST SUMMARY
After preliminary heating, the test specimen is inserted into the automatic pour point apparatus. After starting the program, the specimen is cooled according to the cooling profile listed in Table 1 of Test Method ASTM D5950 and examined in either 1, 2, or 3 ° C intervals. The lowest temperature at which movement of the specimen is detected, by the automatic equipment, is displayed as the pour point.
TEST PRECISION
