Micro particles based on polystyrene, 600 nM may be derivatized to generate media for applications such as antibody conjugation and use in immunoagglutination assay development or the stabilization of Pickering emulsions. Polystyrene microparticles are useful as potential biodegradable vaccine adjuvants and drug delivery devices.

For every lot exact values of particle size and standard deviation are determined with an accuracy of 0.01 μm using a Coulter Multisizer.