The goal of this program is to identify, evaluate, and recommend encapsulant materials and processes for the production of cost-effective, long-life solar cell modules. Work performed during this quarter included the development of anti-blocking treatments for EVA sheet intended for use as a lamination pottant. Initial evaluation studies were begun on a new pottant compound, polybutyl acrylate, to assess its preparation and handling characteristics. Corrosion studies using a standard salt spray test wre conducted to determine the degree of protection afforded to a number of metals when encapsulated in candidate pottant compounds. Pottants and outer cover candidates were exposed to intervals of accelerated uv stress aging using the RS/4 fluorescent sunlamp. Results are discussed. (WHK)