The K.V.S. Exposure Rack is designed to test colour fastness of Textiles Material to daylight. Exposing a set of light fastness standard fabrics 1 to 8 carries out the test and a set of test specimens to daylight till the desire fading of the colour is obtained. The change in colour of exposed area of the test specimen and the light fastness standard fabrics are then examined and the relative degree of colour fastness of test specimen determined.

The equipment consists of a frame made of wood with a glass framed wooden lid hinged over its top. The frame is fitted on a steel stand so that it can be kept in open with the frame located at a convenient working height and tilted at 45° to the horizontal.