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Fluorescent brightener is a fluorescent dye, or a white dye, is also a complex organic compounds. Its characteristic is to stimulate the incident light to produce fluorescence, so that the dye material to obtain similar to the glittering effect of fluorite, so that the naked eye to see the material is white, to whitening effect. Its role is to absorb the product of the invisible ultraviolet radiation into purple blue fluorescent radiation, and the original yellow light complement each other to become white, improve the product in the daylight whiteness. Brighteners have been widely used in textiles, paper, washing powder, soap, rubber, plastics, paint and paint and so on.

365nm naked eye observation under the light source is white (or light blue), light dark, light color pure. According to the fluorescent substance on the object of fluorescence reflection is strong, showing blue, according to the basic non-fluorescent material does not change, so the purple 365nm test results will be more intuitive and accurate.

Base section of the single-core lamp beads: purple light normal light color is purple, high brightness. In the natural light state, the fluorescent agent in the naked eye can not identify the "stealth" state, in the professional purple light irradiation, the original stealth fluorescent agent was blue in front of the naked eye. Because the purple and blue visual effects similar to the relative effect of 365nm to the contrast is not strong

395NM Purple encounter Fluorescent bright blue; 365NM White (or slightly light blue) encountered Fluorescent bright blue compared to 365 color change contrast more obvious detection more intuitive and accurate