NOTE 12—Because of the high melting point of hexadecane, Group 4 verification distillations will have to be carried out with condenser temperatures >20 °C.
9.2 Automated Method:
9.2.1 Level Follower—For an automated distillation apparatus, the level follower/recording mechanism of the apparatus shall have a resolution of 0.1 % volume or better with a maximum error of 0.3 % volume between the 5 % and 100 % volume points. The calibration of the assembly shall be verified in accordance with manufacturer’s instructions at intervals of not more than three months and after the system has been replaced or repaired.