OPACITY TESTER Opacity tester is used to determine optical characteristics of plastics films. Procedure based on transmission of light through the specimen. Features: • Compact table top model. • New version as per amendment of standard IS : 12235 (PART 3) 2004. • Digital display with direct % reading facility. • Light source used as incandescent lamp working between 540 nm to 560 nm. • Power Requirement: 220/230 V AC, 50 Hz Single Phase.