Simulation of sunlight in the critical short wavelength region

Abstract

Introducing the new UVA‐340 lamp, claimed to be one of the best simulation of sunlight available for use in the Q‐U‐V Weathering Tester. Short wavelength UV is widely recognized as the cause of most sunlight damage to durable, exterior grade polymers. The UVA gives an excellent simulation of this region, from 365 nm down to the solar cut‐off of 295 nm. Furthermore, the UVA‐340 produces no UV wavelengths below the solar cut‐off. In many cases the UVA‐340 provides better correlation with outdoor exposure than the shorter wavelength UVB lamps most commonly used with the Q‐U‐V. And it usually gives faster test results than the slightly longer wavelength UVA‐351 lamps. The UVA‐340 compiles fully with ASTM G‐53, and the thousands of Q‐U‐V's now in service can use the UVA‐340 without modification. For complete information contact The Q‐Panel Company.

Citation

(1988), "Simulation of sunlight in the critical short wavelength region", Pigment & Resin Technology, Vol. 17 No. 6, pp. 19-19. https://doi.org/10.1108/eb042493