Universal Engineering Corporation offers Brightness Tester with Selenium Photocell Sensor. Universal Engineering Corporation is an ISO 9001 awarded company. The company manufactures Package Testing Instruments and Paper Testing Instruments. The Brightness Tester with Selenium Photocell Sensor is used for electronically measuring and digitally presenting the Brightness, Opacity and Gloss of the paper and other material by angular reflectance. The Brightness Tester with Selenium Photocell Sensor is designed to yield constant results; it gives precision measurements with less than 0.5% FS deviation between the instruments.