The Best Ultraviolet LED Flashlights Of 2016

by Patrick Hyde •


In A Nutshell

The Details

Ultraviolet light is the preferred light source of TV crime scene investigators on the hunt for body fluids. Distinguished by its trademark purple glow, it has a wavelength that is shorter than visible light but longer than X-rays, in the range of 10 nanometers to 400 nanometers. It is useful to make fluorescent substances glow that can’t otherwise be seen by the naked eye. Portable UV light used to be too unwieldy and expensive for consumer purposes, but that all changed after ultraviolet light emitting LEDs were introduced in 2006. They are now widely available in flashlight form.


These flashlights are most often used to detect fraudulent documents such as fake IDs, see watermarks, read invisible ink or investigate crime scenes. They can also be used to “fluoresce” scorpions and certain types of minerals, and charge “glow-in-the-dark” object like fishing lures. Use them to protect your businesses from counterfeit money and your home from pointy tailed pests.

Here are the best rated, most reliable UV flashlights available:

Scorpio Premium 51 LED 395 nm UV Flashlight


This 51 LED is 30% brighter than the other flashlights on the market and has a high quality UV light.. At 395 nanometers (nm) the Scorpio Premium provides the upper end of the wavelength spectrum for UV light. The UV bulbs are rated to last over 100,000 hours and the body is made of durable aluminum with “O” rings for water resistance.

At 5.8″ x 1.42″ it is quite portable and easy to use for employees. It is one of the best reviewed ultraviolet LED flashlights on Amazon and perfect for scorpion hunting.

Gallium Indium Nitride UV Flashlight

This Gallium Indium Nitride UV flashlight gets great ratings from Amazon buyers, so we thought we’d include it here. Reviewers were impressed by the flashlight’s durability, and the fact that it emits 365 nm UV light, which is at the very edge of our visible range. The light from this flashlight appears as a dim purple-blue to the eye, but when it shines on items that fluoresce they light up brightly.

It uses three AAA batteries — we recommend using low self-discharge AAA rechargeable batteries like Eneloop Pros in this flashlight.

Streamlight 51018 Twin-Task UV Flashlight

Ultraviolet LED flashlights

Streamlight is one of the few companies that still make flashlights in the U.S., and their products get consistently high ratings.

If you need reliable flashlight that provides both an ultraviolet mode and white light mode, the Streamlight Twin-Task UV Light is a great choice. It has six 390nm UV LEDs for ultraviolet light, and an ultra-bright xenon bulb for white light. It’s fully waterproof, and one meter impact resistance tested.

The Twin Task is powered by three C-size batteries — we recommend using the latest rechargeable Sunlabz batteries. Read our full review to see why they are the best on the market right now.

Comments 3

  1. Maria Liberatore

    Hey Patrick,
    Love your product info about the Scorpio 51 LED 395 NM UV. Would like to buy them wholesale for our shop “Area51 Smoke Shop” in N. Chesterfield, VA, but can’t find a reputable wholesaler that sell the real Scorpio and not copycats. Can you direct me to a wholesaler in the USA? Thanx.
    Maria Liberatore

  2. Tabitha Bowling

    Hi Justin, thanks for these LED flashlight recommendations. Another note on the Boost FP AA/AAA batteries. We recently tested them against the Eneloop White, Eneloop Pro and Energizer Advanced and the Boost FP batteries maintained a relative LUX brightness of 100 for over 100 minutes, whereas the other 3 batteries dropped to less than 80 after just 10 minutes, and then down to below 40 after 80 minutes. A LUX reading of 40 and below is considered very dull. Please let me know if you would like us to test any of the flashlights you reviewed, or any other battery-operated device featured on your site.

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