Ilford ILFOTEC DD-X is a fine grain developer which gives full film speed. It produces negatives which are easy to print. Correctly exposed negatives developed in ILFOTEC DD-X have a full range of ton espandi...es, with depth in the shadows, a smooth transition through the mid-tones and bright, detailed highlights. ILFOTEC DD-X is designed to complement the features of Ilford films, especially the range of Ilford Delta Professional films. In particular, it is recommended for use with Delta 3200 Professional film rated at EI 3200/36. It also gives excellent results when used with quality black and white films from other manufacturers. ILFOTEC DD-X is supplied as a liquid concentrate for one-shot use. Should be diluted 1 4 with water before use. ILFOTEC DD-X working strength solutions should not be kept for more than 24 hours. Development time in tanks (68°F/20°C) for Ilford Delta 3200 Film (EI 800): Diluted 1 4 = 7 min. (EI 3200): Diluted 1 4 = 9.5 min.