Xenopus Electronix Ultraviolet Flashlights and Lanterns
Models best suited for Arson Investigation work where accelerants are to be
detected under longwave UV:

Lanterns:
XeLED-Ni1UV-R3-385 Kits

365nm wavelength typically recommended, but investigators are having great
success with 385nm models for gasoline, diesel, and kerosine. For 365 nm products,
see Non-Destructive Testing page
 Flashlights: 385nm


XeLED-Ni1UV-R3-385-SS-K
Kit Price $300

Rechargeable LiIon battery and charger available. Pair of batteries included, so one can be used while one is charging. Add $40 -- see below.		 385nm, >2500uW/cm2 at 15" (yes, fifteen inches) inspection torch
DATASHEET
More powerful! Yes, regulated UV output. Yes, true 385nm peak emission.
At 15", the beam diameter is a useful 6" across, using a lens, and not a reflector.
Kit includes custom case and viewing glasses.
Requires 2xCR123A cells (included); also supports rechargeable 18650 cell. See below for chargers and cells