This Order declares that “separators, hydrocyclone, incorporating an interchangeable inlet wedge” (tariff classification 8421.21.90) are subject to Item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995, effective 27 November 2008 and continuing until revoked (s 269P; revocation ss 269SC/269SD). Mechanically, it changes the tariff treatment importers must claim at customs clearance, concentrating the procedural benefit on importers of these parts and creating administrative discretion and compliance obligations for customs and traders.