LED UV flashlight 395 nm

Who expected under 8.00 a Document Examiner to receive on official level, or a headlight of the 3 kilometers lights geocaching, is definitely wrong here. The light wavelength of 395 nm is a compromise of price and performance. The light appears clearly visible. This is unerwüscht in some applications. In my case, it was about the detection of certain materials. Uranglas eg lit beautifully bright under this lamp. The same applies to materials with optical brighteners. In darkened rooms also impurities can be made visible. The beam of light is highly concentrated and a few meters bright enough. I have a seller based in Germany elected, so that the lamp was delivered promptly. Poor I find the lack of warnings. UV light is harmful to health. In water treatment, it is used for killing germs. Direct eye contact in the lamp should be avoided. The lamp itself is sufficiently well finished. However, the LEDs are controlled primitive, which can lead to a life shortening. Who has such expertise should complement a matching resistor. Given the low price, I am satisfied. So far, my expectations have been met.