Must be mixed with DIAZO Sensitizer.
26.4 fluid oz.., Diazo Photo Emulsion is for water and mineral spirits resistant stencils. Instructions: Fill the Diazo sensitizer bottle (purchased separately) three quarters full with cold water and shake well. Be certain the Sensitizer is fully dissolved. Stir with a stick, rod, etc. if necessary. Then mix contents of the Sensitizer bottle with entire contents of Speedball Diazo Photo Emulsion. Stir until color is uniform. Store the sensitized emulsion in a cool dark place. Shelf life for the sensitized emulsion is 4 weeks at 90F, 8 weeks at 70F, and 4 months when refrigerated.