Ilford PQU Developer - 500ml

For most resin-coated (RC) and fiber-based (FB) black and white papers, a common dilution is 1 part developer to 4 parts water (1+4).

No, Ilford PQ Universal Developer is specifically designed for black and white photographic materials only.

A mixed working solution is best used within 24-48 hours. While it can be stored for longer in a tightly sealed, full container, its activity may decrease over time.

It is suitable for Ilford and some other technical films, and for general-purpose sheet films when high contrast is desired and high enlargement is not the primary requirement. For specific films, always refer to the film manufacturer's or Ilford's guidelines.

Liquid concentrates are convenient as they are pre-measured and only require dilution with water, ensuring ease of mixing and consistent results compared to powdered developers.

While it's possible to use a developer multiple times with certain adjustments (e.g., increased time or temperature), it is generally recommended to use fresh working solutions for optimal and consistent results, especially for critical work.

Ensure consistent agitation during the developing process. Check that the developer solution is at the correct temperature and dilution.

Verify the developer dilution and ensure it is fresh. Consider increasing the development time slightly or using a higher contrast paper grade if applicable.

Check the film development time and temperature against Ilford's recommendations for the specific film being used. Ensure correct dilution of the developer.

Rinse photographic materials thoroughly after development to remove residual developer. Ensure proper handling during the wet processing stages.