I don’t ordinarily post these. We regularly do these test panels in house so we can know certain things about our product we need to know. UV panels are just one in house test we do, there are many others. This panel is one from our achieves of thousands of panels on UV. This panel illustrates the importance of mix ratio. The left section was mixed correctly while the right was purposely mixed 120 to 50 by volume. This panel was pulled at 5 months (Approx. 1500 hours) … test was done in AZ. Test resin/hardener is 2000/2100F