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The Light Fastness Tester works on colorant such as dye or pigment can describes resistant to fading when exposed to light. Basically nowadays dyes and pigments are used for dyeing fabrics, plastics, etc. They can also be used in making paints or printing inks. The bleaching is caused by electromagnetic radiation in chemical structure which gives the color. The part of molecule responsible for color is called chromophore. The lightfastness is measured by exposing the sample to a light source for specific time period and then comparing it to an unexposed sample. These testers are made up of high quality components. Further they are available at low price.
Light Fastness Tester (Mercury-Tungsten Lamp), an economical general light fastness testing machine, to determine the colour fastness and degradation due to the effects of sunlight on textiles.