Best blacklight flashlight1/16/2024 Cheaper UV LEDs tend to produce quite a bit of unwanted, unnecessary visible light. Ultraviolet light can be used to find unknown substances, but as you can see, the differences between the different UV lights are large and obvious.ĥ: Test filters for UV flashlights: ZWB2 Improve your UV flashlight and block visible light with a ZWB2 filterĪ zwb2 filter looks like a black piece of glass, but in reality, it is used to block out any visible light a UV LED may produce. The SK68 was simply too weak with the used camera settings. In this kind of environment, the winners are clear. I presumably used the lower mode in this picture. Only after I performed this test, I noticed that the Jaxman U1C has actually 2 modes. Jetbeam Jet UV Mantaray S1 Ultrafire SK68UV Convoy S2+ Convoy S2 Jaxman U1 Jaxman U1C Sofirn SF32UV Weltool M2BF Xanes 51UV Convoy C8 UV Again, the weaker lights don’t look very good in the pictures. I used the following settings on my camera: ISO1600, F5, 1/3 sec. So… I walked around in the dark, searching for a spot with an unknown substance… and I found it…. And again, after 7 days of waiting, it was impossible to notice cooking oil on the carpet I used for testing. He also recommended testing with cooking oil. Then, the owner of Weltool recommended testing Radiator Coolant, but after 7 days of waiting, the coolant wasn’t visible with any light I tested. But even without using UV light, these spots were visible, so kind of useless to use UV. The main difference is in the minute details, and the width of the beam.ģ: Find unknown substances with UV Black Lightįor this test, I wanted to see if I could observe dried blood on clothes.
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