1.1 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.
1.2 This test method is designed to cover the range of
temperatures from −66 to +51°C; however, the range of
temperatures included in the 1992 interlaboratory test program
only covered the temperature range from −39 to +6°C, and the
range of temperatures included in the 1998 interlaboratory test
program was −51 to −11°C. (See Section 13.)
1.3 Test results from this test method can be determined at
1 or 3°C intervals.
1.4 This test method is not intended for use with crude oils.