NF EN ISO 11341

<p>ISO 16474-1:2013 provides information and general guidance relevant to the selection and operation of the methods of exposure described in detail in subsequent parts. It also describes general performance requirements for devices used for exposing paints and varnishes to laboratory light sources. Information about such performance requirements is required only by producers of artificial accelerated weathering or artificial accelerated irradiation devices.</p> <p>ISO 16474-1:2013 also provides information on the interpretation of data from artificial accelerated weathering or artificial accelerated irradiation exposures.</p>

<p>ISO 16474-2:2013 specifies methods for exposing specimens to xenon-arc light in the presence of moisture to reproduce the weathering effects that occur when materials are exposed in actual end-use environments to daylight or to daylight filtered through window glass.</p> <p>The specimens are exposed to filtered xenon-arc light under controlled conditions (temperature, humidity and/or wetting). Various types of xenon-arc lamps and various filter combinations may be used to meet all the requirements for testing different materials.</p> <p>Specimen preparation and evaluation of the results are covered in other International Standards for specific materials.</p> <p>General guidance is given in ISO 16474‑1. Xenon-arc exposures for plastics are described in ISO 4892‑2.</p>