This European Standard has been prepared based onthe following ISO standards referred to atmospheresfor conditioning and testing:ISO 554ISO 558Standard atmospheres for conditioningand/or testing一SpecificationsConditioning and testing一Standardatmospheres一De,}nitionsThe aim of this European Standard is to harmonizeThespecifications forThe ambient conditions in which testmethods for footwear and components for footwearwill be carried out.