<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1496810522465_7729">I know that there are plenty of LED units that output true UV nowadays. <br></div><div id="yui_3_16_0_1_1496810522465_7737"><br></div><div id="yui_3_16_0_1_1496810522465_7738">But, be aware that many UV lights (especially cheap, or older versions) that use LED sources really don't output true UV light. Rather, they put out an almost UV light, which is blue enough that it does cause things to fluoresce. However, they really are just a very deep blue, and the light is quite visible on stage.</div><div id="yui_3_16_0_1_1496810522465_7804"><br></div><div id="yui_3_16_0_1_1496810522465_7805">For many effects, that is OK. But, if you want the non-fluorescing things to go invisible, you need a true UV light source. The LED versions are nice, in that they are instant on, or can even fade in and out. But, insist on true UV LEDs if you go the LED route and need the full UV effect.<br></div><div id="yui_3_16_0_1_1496810522465_7705"><span></span></div><div class="qtdSeparateBR" id="yui_3_16_0_1_1496810522465_7577"><br><div id="yui_3_16_0_1_1496810522465_7915">-Joe</div></div></div></body></html>