Ilford Perceptol is an extra fine grain developer which gives excellent image quality and very fine grain. It is optimized for use at the slower end of the exposure range. Perceptol has been specially formulated to yield optimum results from high resolution lenses, to exploit the superb grain structure of Ilford medium and slow speed films and to produce significantly finer grain in Ilford, and other, fast films compared with a standard fine grain developer.
Perceptol gives excellent results with any lens/film combination and is therefore ideal when texture and definition are critical; negatives processed in Perceptol are capable of producing finer grain and better quality enlargements than those produced in a standard fine grain developer.
Perceptol is supplied in powdered form and shows exceptional consistency throughout its working life. It is made up to a stock solution for normal tank and tray use, and can be further diluted 1+1 or 1+3 for users who prefer to use fresh solution each time.
Perceptol Film Developer datasheet.