Ilford Ilfotec DD Film Developer Overview
Ilford Ilfotec DD is a replenishable developer for all general purpose black and white films.
Ilfotec DD concentrate is diluted 1+4 with water to prepare working strength replenisher.
For some applications this solution can be used as a developer but some adjustment to the recommended development times is required.
To make working strength Ilfotec DD developer add Ilfotec DD Starter to the working strength replenisher, 1 + 250, i.e. 4ml of starter per litre of developer required.
It is supplied as a liquid concentrate to make up replenisher and the addition of Ilfotec DD Starter solution turns the replenisher into machine tank developer.
Ilfotec DD is specifically designed to be used in applications where large quantities of film are processed such as replenished dip and dunk (hanger) processing systems.
With some adjustments to development times and operating temperature it can also be used in deep tanks and continuous long leader processors.
Ilfotec DD has a long tank life and good resistance to contamination, reliably producing superb quality negatives under a wide range of conditions.
The recommended working temperature range is 20 - 24°C, (68 - 75°F).
For some applications Ilfotec DD working strength solutions can be used as a developer without using Ilfotec DD Starter.
For machine processing Ilford recommends that it is used in conjunction with Ilford Ilfotec DD Starter solution.
 
Replenishable, liquid concentrate film developer. Ideal for processing large quantities of black & white film.
Liquid concentrate film developer
Replenishable
Long tank life
Good resistance to contamination