Ilford Delta 400 Black and White Negative Film (120 Roll Film) - Manual (Page 6)

Page 6 of 7 Nov 2018
DELTA 400 PROFESSIONAL Technical Information
CHARACTERISTIC CURVE
DELTA 400 Professional film developed in ILFORD ID-11 stock for 8 minutes at
24ºC/75ºF with intermittent agitation.
PROCESSING
DELTA 400 Professional can be processed in all types of processing equipment including spiral tanks, rotary
processors, dishes/trays, deep tanks and automatic processors. Standard capacity figures and replenishment
rates can be maintained, when fixing DELTA 400 Professional however, slightly longer times than used with
conventional film are recommended for best results.
Safelight recommendations
Handle DELTA 400 Professional film in total darkness.
Agitation
Intermittent agitation is recommended for use in spiral tanks and deep tanks. With spiral tanks, invert the tank
four times during the first 10 seconds, then invert the tank four times again during the first 10 seconds of each
further minute. Otherwise, follow the recommendations given by the processing equipment manufacturer.
Stop, fix, wash and rinse
For best results it is recommended that all process solutions are kept at the same temperature or at least within
5ºC (9ºF) of the developer temperature.
Stop Bath
After development the film can be rinsed in
water, but we recommend that an acid stop
bath is used such as ILFORD ILFOSTOP (with
indicator dye). ILFOSTOP is also
recommended for all machine processing
applications. When tanks or dishes (trays) of
process solutions are in use a stop bath
immediately stops development and reduces
carry over of excess developer into the fixer
bath. This helps to maintain the activity and
prolong the life of the fixer solution.
The process time given is the minimum required, if necessary, a longer time may be used and should not cause
any process problems provided it is not excessive
ILFORD ILFOSTOP
Dilution 1+19
Temperature Range 18–24ºC (64–75ºF)
Time (sec) at 20ºC (68ºF) 10
Capacity (films per litre,
unreplenished)
15x (135-36)