This Order (under s269P of the Customs Act 1901) declares that immersed hollow‑fibre filter modules (tariff classification 8421.21.90) are goods to which Part III, Schedule 4 item 50 of the Customs Tariff Act 1995 applies, changing their tariff treatment from 07.05.07 until revoked (ss269SC/269SD). Practically, it affects importers' tariff liabilities and requires precise tariff classification for compliance; the decision was made by delegate Paul Mercer under s269P and may be revoked or varied under the cited sections.