The standard provides a test method for UV aging of gluing agents gluing joints using a Fluorescent Ultraviolet or Xenon-arc Light source. This method is used to evaluate the effect of UV (and possibly water) on gluing agents. It is designed to compare the relative durability of different gluing agents under specific laboratory conditions, but not to predict their lifetime in actual use. The standard states that results from different Light sources (Xenon-arc or Fluorescent Ultraviolet) may vary, and that comparisons should be made in the same instrument and using the same type and batch of transparent Adhesives. The standard focuses on the control of test equipment, operating conditions, and exposure procedures.