Devices for determining photoprotective materials

摘要

A device for quantifying the photoprotective performance of a material is disclosed. The device comprises a sample supply and control apparatus comprising a cell having controlled optical properties; a sample temperature sensor; a temperature control; a dry air supply; and an agitator. The device also comprises a light generation and control apparatus comprising a light source which generates a light beam with a spectral signature between about 290 and about 1000 nm and an intensity between about 0.01 and about 5 W/cm2; a light beam collimating lens; an infrared filter; a shutter; and an iris. The device also comprises a test material holder positioned between the light generation and control apparatus and the sample supply and control apparatus such that, when a test material is placed in the test material holder, the light beam impinges upon the test material and any penetrating light impinges upon the cell. This invention provides methods and apparatus for quantification of photoprotective performance of packaging concepts in an accelerated timeframe.