This document specifies a method for exposing plastics to concentrated solar radiation using reflecting

concentrators to accelerate the weathering processes. The purpose is to assess property changes produced

after specified stages of such exposures. The reflecting concentrators used in these exposures are sometimes

referred to as “Fresnel reflectors” because, in cross-section, the array of mirrors used to concentrate the

solar radiation resembles the cross-section of a Fresnel lens.

General guidance concerning the scope of the ISO 877 series is given in ISO 877-1.




NOTE Additional information about solar concentrating exposures, including a partial list of standards in which

they are specified, is given in the Bibliography.