Is SAE J 1885 a weathering or lightfastness test?
SAE J 1885 is not really a weathering test (no rain cycle); some people just call it a “hot light test”. It is most commonly associated with automotive interior testing especially in the USA and Japan. The test is conditions typically are 0.55 W/m2 at 340nm Filters: inner quartz, outer S type borosilcate Black panel temperature 89 + 3OC Relative Humidity: 50 + 5% (light), 95 + 5% (dark) 228 minutes light dry 60 minutes dark dry The results are sometimes quoted as 600kJ/m2 or for 2000 hours exposure.
