Pyrocat-HD in Glycol Film Developer is a high acutance developer formulated by Sandy King as an alternative to other pyrogallol based staining developers. Pyrocat-HD gives negatives of fine grain and full emulsion speed and is suitable for all types of development methods, including rotary, normal agitation, minimal agitation and stand development. Packaging in glycol stabilizes the formula to give a very long shelf life and long term consistency.