This Order (effective 15 Oct 2007) declares specific natural‑gas separators (knock‑out drums, washers, external maintenance platforms and access ladders) classified at 8421.39.00 are goods to which Part III of Schedule 4, Item 50 of the Customs Tariff Act 1995 applies. Mechanically, it changes the tariff treatment that applies on import. It was made by a delegate under s269P and remains in force until revoked under ss269SC/269SD, so importers, customs officials and competing suppliers are the main parties affected.