The Fuji Digital RA Pro Developer Replenisher Part B is specially formulated for all types of prolab applications. It is specifically designed to process RA-4 emulsions and is used in minilabs to roller transport and continuous processors. It is highly regarded as the best solution to produce excellent, solid D-max, impressive color saturation, and clean operation. It is available as a concentrate that is diluted with water for preparing replenisher or working tank solution. The optimal mixing ratio for the preparation of working tank solution or the replenisher tank solutiuon is provided, which is highly recommended to achieve the best results.