Some energy gets lost in the process, so the emitted light has a longer wavelength than the absorbed radiation, which makes this light visible and causes the material to appear to glow. The safest form of UV light and often referred to as Longwave UV, this kind of UV light is generated by Blacklight units (the dark purple fluorescent tubes) as well as UV LED Torches. In case of theft your valuables can easily be traced to you if you’ve marked them with a special UV marker. Far too much visible violet light (interference) produced due poor quality UV LEDs thus producing a poor quality result, with much of any fluorescence generated masked by the visible purple glare. This range produces a much higher quality of UV light with very little purple glare; rather a cleaner, softer, whiter light that allows a greater range of fluorescence to show through.

The downside, however, is that it is only a 4 Watt UV lamp, which means you will need to be close to the minerals with the UV lamp to see them glow.

turn for focusing that’s really smooth, and like the option to have different beam programmes to suit preference. The Vansky UV Black Light Flashlight not only compact, but they’re very affordable too, making them the perfect party gift. Fluorescent black light bulbs are within this output range, and it only takes one bulb to get the black light effect. I’ve lived in the desert for about 18 years of my life, and this is the first house I’ve lived in that seems to have a scorpion issue.

I just bought a UV Flashlight with rechargeable battery (plugs into any USB under power to charge) last 12 hours and 12 hours to charge. The high setting is really very impressive, and the eco setting is great for general torching and more than adequate for outside in the pitch dark which was good to see.

Torches outputting UV in the 380nm range perform much better and produce superior results, with a much reduced ‘visible’ (spill) output. Because of that, the black lights we use as hobbyists are a great way to produce long wave UV light. g., vodka or Everclear) and pour it through a coffee filter to get chlorophyll extract (you keep the part that stays on the filter, not the liquid). i can see where the house builders repaired holes in the drywall, specs of lint on my black sweater, teeth that have been capped and remaining original teeth show up bright white. The ultimate goal of UV lighting is a pure 365nm UV output with zero visible light Interference (spill).

As these units generate less unwanted Interference light, they may naturally appear weaker or darker. This is not the best UV lamp if you simply want to walk around shining your UV light on the ground to find minerals that glow. Now, I’m not saying there aren’t even better ones out there…but what I’ve done is found those UV flashlights that combine both quality AND affordability.These 'Professional' UV Lamps produce a Very High Quality UV source at 365nm; the optimum frequency for fluorescence. This too falls into the long wave UV light range, but is a little more powerful than the florescent bulbs.