The formation of stable particle dispersions are essential to the success of a wide range of commercial products from inks, paints and foodstuffs to cosmetic and pharmaceutical formulations. Polymers and surfactants are used routinely to stabilize aqueous dispersions, and these systems have been studied widely. However, significantly less is known about the detailed molecular assembly of polymers adosrbed to the surfaces of drug particles suspended in fluorinated media. Our previous work - through industrial time at the ILL - has shown a complex behaviour. Here we wish to examine the adsoprtion of a series of representative polymer excipients (essentially, poly(ethylene oxide) and their derivatives) to dispersions ofsilica particles in the partially fluorinated solvent, 2H,3H-perfluoropentane (HPFP).