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UV LED blood finder device

Product information "UV LED blood finder device"

UV blood finder lamp, 395 to 400 nm, 14 LEDs, 118 mm long, 33 mm diameter, operated by 3 x AAA batteries (not included), aluminum housing in black. So that you can quickly find the shot at night! Makes blood visible in the dark!

How black light works: UV-A radiation causes fluorescent substances to glow.  This means that the object irradiated with black light glows. Such fluorescent compounds are found in organic material such as blood, urine or semen. The resulting fluorescent radiation is comparatively weak and can only be perceived in a darkened environment.