Environmental Chambers for and Integrating Sphere-based Weathering Device

Using a new concept for humidity control, based on a proprietary saturated air source, MAC will develop a design for an environmental chamber for use with NIST’s SPHERE UV source, in weathering or other UV degradation studies. The chamber will interface to the exit port of the SPHERE, maintaining the material coupons, mounted in a standardized sample holder, at a programmed temperature and relative humidity, within specified tolerances, for the duration of testing. The design will include the novel humidity source and evaluate a new humidity control scheme for possible inclusion or adaptation.