Designed for use with polyester screen fabrics, Speedball Diazo Photo Screen Printing Emulsions make it easy to create detailed, photographic-style stencils with professional results—no expensive equipment or darkroom required. Compatible with both water-based and solvent-based inks, these versatile emulsions capture fine detail with excellent clarity and wash out cleanly when you're finished, allowing screens to be reclaimed and reused again and again.