Sun (exposure) tests

Several tests for sun exposure paints and paint systems are available. The most important are:

  • ISO 16474-1, General guidelines for light exposure testing in a laboratory
  • ISO 16474-2, Xenon test, variation in wavelength, radiation, temperature, relative humidity, method of humidification, water temperature, wetting cycle
  • ISO 16474-3, UV test, can be distinguished in UVA (340 nm) and UVB 13 nm) light, different cycles are used (alternating of dry irradiance and a condensation or water phase), there is variation in back-panel temperature; RH is not controlled; the test is a part of ISO 20340
  • ISO 11341, this standard has four different cycles, of which two alternating dry and wet and two dry continuous exposure; the radiation is equivalent to ISO 4892-2
  • ISO 11507 withdrawn, replaced by ISO 16474-1 and -3 (see above)
  • ISO 4892-2, Xenon lamp, variation in wavelength, radiation, temperature, relative humidity, method of humidification, water temperature and wetting / light cycle; this standard has many similarities with ISO 16474-2
  • ISO 4892-3, UV light (short wavelength UV), variation in type of UV light, radiation, temperature, method of humidification, water temperature and wetting / light cycle; the standard has many similarities with ISO 16474-3
  • ASTM G 26 withdrawn, replaced by ASTM G 151
  • ASTM G 53 withdrawn, replaced by ASTM G 154
  • ASTM G 151, general guidelines for rapid testing methods with light sources
  • ASTM G 154, UV exposure, largely equivalent to ISO 4892-3 and ISO 16474-3