Applies item 50 of Part III, Schedule 4 of the Customs Tariff Act 1995 to imported strontium acetate (tariff classification 2915.29.00), effective 27 July 2010 until revoked. Mechanically, it changes the tariff treatment of that specific good (affecting importers’ duty exposure and pricing); the instrument was made by a delegate of the CEO under s.269P and can be revoked under ss.269SC–269SD. Primary actors are importers (who pay tariffs) and the customs agency (which administers the concession).