Request InfoAtlas Material Testing Technology LLC, Custom Testing SolutionsAtlas Material Testing Technology offers services to evaluate the performance, durability and reliability of solar cells and modules at its ISO 17025-accredited laboratory. There are testing programs for full-scale photovoltaic (PV) arrays, building-integrated PV systems, complete modules and individual PV cells. The company has developed the XenoCal solar sensor for UV preconditioning of PV modules. It measures irradiance (W/m2) or radiant exposure (kWh/m2). Depending upon which IEC standard is selected from the menu, values in two wavelength bands are displayed. 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