Before the first occasion on which a substance goes to any workplace, its manufacturer or importing supplier has to decide whether it is a hazardous substance. The decision is made by applying the GHS with the Schedule 7 modifications, as the r 5 definition of the term requires. No fresh determination is needed where one has already been made for the same substance under equivalent legislation (r 143(2)). The duty supports compliance with sections 29 and 30 of the Act.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.