21.1.1 The following criteria are used for the determination of pollution
classification and assignment of appropriate carriage requirements for bulk liquid cargoes
being assessed for entry into the IBC Code or
lists 1, 3 or 4 of the MEPC.2/Circular.
21.1.2 In developing such criteria, every effort has been made to follow the
criteria and cut-off points developed under the Globally Harmonized System (GHS).
21.1.3 Although the criteria are intended to be closely defined in order to
establish a uniform approach, it must be emphasized that where human experience or other
factors indicate the need for alternative arrangements, these shall always be taken into
account. Where deviations from the criteria have been recognized, they shall be properly
recorded with justifications.