Xeno, Peroxide-based explosives are strongly fluorescent like meth- a phenylethylamine. I wonder if the gun will be able to distinguish between some of the commonly found phenylethylamine derivatives?: Methamphetamine- <A HREF="http://en.wikipedia.org/wiki/Methamphetamine" target="_blank">http://en.wikipedia.org/wiki/Methamphetamine</A> Amphetamine- <A HREF="http://en.wikipedia.org/wiki/Amphetamine" target="_blank">http://en.wikipedia.org/wiki/Amphetamine</A> Ephedrine- <A HREF="http://en.wikipedia.org/wiki/Ephedrine" target="_blank">http://en.wikipedia.org/wiki/Ephedrine</A> Pseudoephedrine- <A HREF="http://en.wikipedia.org/wiki/Pseudoephedrine" target="_blank">http://en.wikipedia.org/wiki/Pseudoephedrine</A>