(Equivalent Test Method: ISO 6616)
EXPLANATION
This test method is used for the determination of the distillation characteristics of petroleum products and fractions that may decompose if distilled at atmospheric pressure. Both a manual and and an automatic method are included. The referee method is the manual method at mutually agreed upon pressure. Many engineering design correlations have been developed on data by this test method. These correlative methods have been used extensively in current engineering practice.
TEST SUMMARY
The sample is distilled at an accurately controlled pressure between 0.13 and 6.7 kPa (1 and 50 mm Hg) under conditions designed to provide approximately one theoretical plate fractionation. Data are obtained from which the initial and the final boiling points, and a distillation curve relating volume % distilled and atmospheric equivalent boiling point temperature can be prepared.
TEST PRECISION
See the table below for the precision data obtained from a 1983 cooperative interlaboratory program. The bias of this method has not been determined.
