The photo emulsion method of screen printing makes fine line drawings, computer generated images, various hand and commercial lettering, and photographic half-tone
positives. Quart of photo emulsion must be mixed with Diazo sensitizer (#4578). Sensitizer bottle sized to fill ¾ with cold water and mix well. Must add contents of entire bottle to Diazo Photo Emulsion (#4579). 3-year shelf life unmixed.