CONDITIONS FOR STORING A PROTEIN COMPOSITION COMPRISING SURFACTANT AND CHANGE IN THE SURFACTANT CONTENT

摘要

The present invention concerns the use of a stopper coated with a film of tetrafluoroethylene polymer or copolymer for sealing a container containing a composition comprising at least one protein and at least one surfactant, characterised in that the film of tetrafluoroethylene polymer or copolymer prevents or limits the reduction in the concentration of surfactant in said composition, or prevents or limits the adsorption of the surfactant by said stopper (2).