The main purposes of this Act are to be achieved mainly by—
(a) identifying particular activities and substances to be controlled; and
(b) authorising classes of persons to use the substances in controlled ways for particular purposes; and
(c) providing a scheme to authorise additional activities using the substances under approvals or licences; and
(d) requiring persons authorised to use the substances to have competencies and be accountable for the safe and effective use of the substances; and
(e) requiring particular things to be done to ensure the appropriate use, quality, safety and disposal of the substances at all stages, from manufacture to supply to the consumer and final disposal as waste; and
(f) providing for compliance with this Act to be monitored and enforced.