SCHEDULE 4 Sampling and analysis

PART 1 General

4 Authorisation of alternative methods of analysis
(1) The Welsh Ministers may authorise a method different from those set out in paragraph 3(2) or 3(3) if satisfied that it is at least as reliable.
(2) An authorisation may be time-limited and may be revoked at any time.
Sch. 4 para. 4 in force at 20.11.2017, see reg. 1