(1) A person who has in his or her possession a precursor of a quantity not
less than the quantity prescribed by the regulations in relation to that
precursor is guilty of an offence.
(2) It is a defence to a prosecution for
an offence under subsection (1) if the defendant establishes--
(a) that the
defendant is in possession of the precursor for the purposes of an activity
that is not unlawful, or
(b) that the defendant otherwise has a reasonable
excuse for possessing the precursor.
(3) In this section,
"precursor" means a substance--