TCO 1108416 declares polystyrene pipettes (tariff classification 3926.90.90) are goods to which Part III, Schedule 4 item 50 of the Customs Tariff Act 1995 applies, effective 08.03.2011. It is made under s.269P of the Customs Act 1901 and continues until revoked (ss.269SC/269SD).
Mechanically, this changes the tariff treatment that importers of these pipettes face by applying the Schedule 4 item; the order was issued by a CEO delegate (Michael Perry), so administrative discretion and correct tariff classification are key compliance points.