(1) This section applies to a sample of a substance being taken by an inspector for analysis and is subject to section 139.
(2) The inspector must—
(a) divide the sample into 3 separate parts, and mark and seal or fasten each part; and
(b) leave 1 part with the person told under section 135 (Person in charge etc to be told sample to be analysed) of the inspector's intention to have the sample analysed; and
(c) keep 1 of the parts for analysis; and
(d) keep 1 part for future comparison with the other parts of the sample.
(3) If a sample of a substance taken by an inspector is in the form of separate or severable objects, the inspector—
(a) may take a number of the objects; and
(b) if the inspector takes a number of the objects, must—
(i) divide them into 3 parts each consisting of 1 or more of the objects, or of the severable parts of the objects, and mark and either seal or fasten each part; and
(ii) deal with the sample under subsection (2) (b) to (d).