This Order declares that specified effluent treatment and disinfection plant components (tanks, reactors, pumps, blowers, strainers/filters, electrical controllers, valves, membranes, gantry cranes/hoists, lamps, diffusers) classed at tariff heading 8421.21.90 are goods to which an item in Part III of Schedule 4 to the Customs Tariff Act 1995 applies. It takes effect from 24 August 2009 until revoked under ss 269SC or 269SD and was made by a delegate of the Chief Executive Officer. The instrument changes tariff treatment for importers of the listed equipment and creates an incentive to import goods that match its description.