WIMBERLEY'S WD2D PYRO-METOL FILM DEVELOPER is a pyrogallol-metol film developer that produces medium-grain negatives with high acutance and normal to lower than normal contrast. Results are similar to Formulary ABC pyro but without loss of film speed. The chemicals in the kit are used to make two stock solutions which are diluted 1:1:15 for sheet film or 1:1:20 for roll film. The shelf life of the stock solution is six months. The working solution is used once and discarded.