Ilford Ilfotec RT Rapid Developer Replenisher is a replenishable developer for machine processing all general purpose black and white films, it must be used in conjunction with Ilford Ilfotec RT Rapid Starter solution.
It is supplied as a two part liquid concentrate kit, part A and part B, that on dilution make up replenisher solution.
The addition of Ilfotec RT Rapid Starter turns the working strength replenisher into working strength developer that is specifically designed for replenished roller transport and short leader card process systems when very short development times or high temperatures are needed.
It is the recommended developer for the Ilfolab FP40. It is not recommended for developing films in dip and dunk (hanger) or rotary tube or continuous long leader processors or deep tanks, spiral tanks and dishes (trays).
Ilfotec RT Rapid has a long tank life and good resistance to contamination, reliably producing excellent results under a wide range of conditions. The recommended operating temperature range is 22°C, (72°F).