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Inspecting surface with ultraviolet flashlight,I use ordinary led flashlight and replace white leds with ultraviolet leds.
With this ultraviolet led flashlight you can check money,you can check bedroomif there is  body fluids that contain fluorescent molecules.
What Materials Glow Under Ultraviolet Light:White Paper,Petroleum Jelly,Body Fluids,Vitamins,Antifreeze,Laundry Detergents.

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Add &quot;scorpions&quot; to your list! <br>They show up great under UV.

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Bio: My name is marjancho and I love electronics,makeing gadgets,hack and pranks.
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