Ilford PQ Universal Developer — 500 ml Liquid Concentrate
ILFORD PQ Universal is a liquid concentrate developer formulated for dish/tray processing of both resin-coated (RC) and fibre-base (FB) black & white photographic papers. It gives a slightly warm image tone with many paper types, and has excellent keeping stability. In addition to paper, PQ Universal can also be used in limited capacities for technical films and sheet films when high enlargement is not required. Dilution is typically 1 + 9 (developer : water).
Key Features (bullets)
-
Liquid concentrate — easy to mix.
-
Compatible with both RC and FB black & white photographic papers.
-
Slightly warm image tone to enrich prints.
-
Usual working dilution: 1 + 9. Capacity: 1 litre working solution from 500 ml concentrate; suitable for multiple print sheets.
-
Good shelf life and “keeping properties” as a concentrate.
Technical Specifications
| Specification | Detail |
|---|---|
| Product Name | Ilford PQ Universal Developer |
| Volume | 500 ml liquid concentrate |
| Type / Use | Liquid concentrate paper developer for RC & FB B&W prints |
| Image Tone | Slightly warm / neutral depending on paper & process |
| Working Dilution | 1 + 9 (developer : water) for paper use |
| Film / Sheet Film Use | Can be used for technical / sheet films in tray/dish in limited cases (with 1 + 9 or 1 + 19 dilutions) |
| Operating Temperature | Ambient / room temperature (nominal ~20 °C / 68 °F) |
| Limitations | Not recommended for general 35mm roll film processing or high temperature / machine processing |
