4.2 A 100-mL specimen of the sample is distilled under
prescribed conditions for the group in which the sample falls.
The distillation is performed in a laboratory batch distillation
unit at ambient pressure under conditions that are designed to
provide approximately one theoretical plate fractionation. Systematic
observations of temperature readings and volumes of
condensate are made, depending on the needs of the user of the
data. The volume of the residue and the losses are also
recorded