Profile: National Photocolor Corp. is a manufacturer of off-the-shelf and custom pellicles. Our product line includes pellicle frames, coatings and pellicle specifications. Our frames are stocked from 1 inch to 6 inches. The frame is black anodized, then lapped to create a flat at the inner edge.The membrane is then stretched over the flat, and firmly adhered to the beveled area. The machined aluminum rings have two threaded mounting holes on the back. Our pellicle coating contains a wave length of 400 nm to 900 nm. We also provide non- polarized lights.