Resources 17 July 2025 SOIA Guidance on the Restriction of Synthetic Polymer Microparticles (SPM) Download 18 October 2019 SOIA GMP Guidelines Download 17 October 2019 Code of Practice Download 06 July 2016 SOIA presentation IEX 2016 Cambridge Download 06 July 2016 IEX 2016 – Cefic SOIA Group Paper Download 08 March 2016 SOIA poster IEX 2016 Download 08 January 2012 SOIA 2012 Poster Download