How to test Colour Fastness properties of Fabric

Hi Dear Friends,
Colour fastness is very important properties of textile materials. When we wash our textile products then after a certain period of time the colour changes. This property is called the fastest properties of the textile garments. The colour goes out under several kinds of applications like light, rubbing, wash, perspiration and many more. Wash fastness is the very common fastness properties that must be taste because when we wear fabric then we must wash the garments and in that way, it loses its colour. So, what is the rate of losing the colour under certain conditions that must be clarified and tested under certain conditions. So there are several standard of testing and in this video tutorial I have explained about this fastness properties testing elaborately and I hope you will have the basic idea about colour fastness properties and some aspects of its testing.