weathering test/ light fastness- exposure to laboratory light sources or artificial weathering/UV- test
DIN EN ISO 4892-2; with filtered xenon arc lamp, sample area max. 240 x 400 mm²); with water sprinkling (water spray) or dry. Also possible is the determination of light fastness, e.g. from printink inks or coloured materials, acc. DIN ISO 12040 bluescale (wool standard)/ fastness level 1-8.
artificial wheatering, simulation of outdoor exposure In the case of outdoor wheatering the sample is exposed to the total range of global radiation of about 300- 3000 nm. The artificial wheathering is carried out by usage of filtered xenon arc light in the spectral range of about 300- 800 nm.
artificial wheatering, indoor exposure behind window glass When the material is exposed to sunlight behind window glass (interior), the short wave spectral range below 320 nm, which is very relevant to the material aging, is filtered out. The artificial wheathering is carried out by usage of filtered xenon arc light in the spectral range of about 320- 800 nm.