Ilford Harman Warmtone Developer is a liquid concentrate hydroquinone developer suitable for the dish/tray developing of all black and white photographic papers both resin coated (RC) and traditional fibre based (FB). It is used at a dilution of 1+9.
Warmtone developer is clean working, has excellent keeping properties and gives a warmer image tone to most papers. Warmtone developer is designed for use at ambient room temperatures, nominally 20°C/68°F.
Ilford does not recommend its use for high temperature or machine processing applications. It is NOT suitable for developing films.
Ilford Harman Warmtone Developer for Black and White RC and Fiber-based Papers