By adding ready-to-use Liquid Orthazite directly to paper developers, chemical fog is easily eliminated. Such fog is usually caused by the use of out-dated film or paper, by developing prints at too high a temperature or by touching the emulsion surface during development. Liquid Orthazite will also increase the fineness of grain for Borax-type semi-fine grain developers and will obtain true black and blue-black tones on papers, which tend to given an image with a green cast.