This Order declares that certain acid-processing extractors (precipitators, scrubbers, dryers, absorbers, converters, filters, heat exchangers, dust collectors, centrifuges) classified at tariff heading 8421.39.00 are goods to which Item 50 in Part III of Schedule 4 to the Customs Tariff Act 1995 applies, effective 08.02.06. It changes the tariff treatment that importers of those machines face and places an administrative obligation on Customs to treat those goods under the specified concessional Schedule entry until revoked under ss 269SC–269SD.