"NIR is better for analyzing solids, UV is better for liquids" What is the meth gun using? UVF for solids. What is this portable gun using? NIR for solids: <A HREF="http://www.polychromix.com/details_phazir_bluebox.php?ID=22" target="_blank">http://www.polychromix.com/details_phazir_bluebox.php?ID=22</A> Griffin's vision for "way in the future" is as close as visiting another company's website today! LOL