When did IGR begin with the UV watermarks on assays?
Posted: Tue Jan 03, 2023 8:08 amOver the weekend, I learned that a black light will display UV watermarks, so I pulled out my bars to give this a try. I could easily see the markings on 2 of the newer assays (the ones that are the blue/white split). The solid blue ones that I have do not have the markings, but, I also believe it was prior to the implementation of those marks. Anyone know when they began being applied? I'm guessing 2021?