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Ilford Photo

Ilfotec DD-X

B&W developer Liquid concentrate In production Reusable

Development times

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Showing 1 of 73 published times.

Film Dilution EI Time Source
Agent Shadow 1+4 20.0 °C 1600 push 2 stops 17:00
Verified Datasheet Report

Reuse

Checked 21 October 2026

Ilford says Ilford Ilfotec DD-X may be used for more than one film.

  • 1+4 may be reused

Longer time for reuse: +10 % development time for each successive film in a litre (N, N+10 %, N+20 % ...), up to N+90 % for film 10.

Capacity, as the maker states it: 1 litre of 1+4 working solution reused: up to 10 x 135/36 or 120 films. Per litre of concentrate: 16 films one-shot, up to 50 reused.

For the highest image quality ILFOTEC DD-X should be used as a one-shot developer, however for greater economy it can be reused to process either several films individually or multiple films in batches. ... 1 Litre of ILFOTEC DD-X 1+4 can process up to 10 x 135/36 or 120 roll films provided that the developer is reused. ... Used at 1+4 for one shot processing it will develop 16x135/36 films. If reuse techniques are used, it will develop up to 50x135/36 or 120 films. ... ILFOTEC DD-X working strength solutions should not be kept for more than 24 hours.

ILFORD ILFOTEC DD-X Technical Information (Harman/Ilford, Aug 2019, 8 pp.) ↗

Dilutions

  • 1+4 1 + 4 water
  • 1+9 1 + 9 water

Link to this page

Specification

Type
B&W developer
Form
Liquid concentrate
Capacity rolls per litre
10.0
Shelf life, unopened
—
Shelf life, opened
—

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