About this TABlet Increasing incidence of skin cancer from sun radiation has been a major concern worldwide. In order to determine the extent to which a fabric can block UV radiation, an evaluation method is described in this TABlet. The contents are: .Introduction .Sunlight Radiation .UV Radiation .Protection from UV Radiation .Ultraviolet Protection Factor .UV Transmittance and Percent Blocking .Testing of Fabric for UV Protection Factor and UVA & UVB Transmittance