Criminal Code Act 1995

If an alleged offence against this Part involves a quantity of a controlled drug in a mixture of substances, the prosecution may prove the quantity of the controlled drug involved:

by proving that the mixture contains that quantity of the pure form of the controlled drug; or

if such a quantity is specified, in regulations made for the purposes of item 1 of the table in section 301.10, 301.11 or 301.12, for the controlled drug in a mixture—by proving that quantity of the mixture.

If an alleged offence against this Part involves a quantity of a controlled precursor in a mixture of substances, the prosecution may prove the quantity of the controlled precursor involved by proving that the mixture contains that quantity of the pure form of the controlled precursor.

If an alleged offence against this Part involves a quantity of a border controlled drug in a mixture of substances, the prosecution may prove the quantity of the border controlled drug involved:

by proving that the mixture contains that quantity of the pure form of the border controlled drug; or

if such a quantity is specified, in regulations made for the purposes of item 1 of the table in section 301.10 or 301.11, for the border controlled drug in a mixture—by proving that quantity of the mixture.

If an alleged offence against this Part involves a quantity of a border controlled precursor in a mixture of substances, the prosecution may prove the quantity of the border controlled precursor involved by proving that the mixture contains that quantity of the pure form of the border controlled precursor.