This Order declares that sprayers used in alumina‑plant cooling towers (tariff heading 8424.89.90) are subject to Part III, Item 50 of Schedule 4 to the Customs Tariff Act 1995, effective 8 January 2009. Made under s.269P of the Customs Act 1901, it remains in force until revoked under ss.269SC/269SD. Mechanically, it applies a tariff concession to the specified imports and therefore changes importers' tariff treatment and compliance obligations; the Department of Customs administers and may revoke the Order. Check Item 50 for the precise duty conditions.