Haze is the scattering of light as it passes through a transparent material, resulting in poor visibility and/or glare. Haze can be inherent in the material, a result of the molding process, or a result of surface texture. Haze can also be a result of environmental factors such as weathering or surface abrasion. Luminous Transmittance measures the amount of light that passes through a sample. Thus haze and transmission measurements can be useful in product development, process development, and end use performance testing.