FORMULARY FILM DEVELOPER 12 is equivalent to Edwal 12, and is an excellent fine grain film developer that gives full emulsion speed, a full contrast range and superb sharpness. The developer contains p-phenylenediamine, glycin and metol as the active agents. Developer 12 is not a compensating developer. The negatives are brilliant rather than flat in appearance. Developer 12 reproduces flatter scenes better than other film developers and as a consequence, it is an excellent developer for copying or reproducing negatives. The chemicals in the kit are used to make a working solution with a shelf life of two months.