A few years ago, Bellini acquired the rights and chemical formulas of the old Ornano company to breathe new life into them; Nucleol BF 200 comes from that back catalogue. It is a one-shot, high-energy pyro film developer, resulting in fine-grain negatives with a high level of sharpness, high acutance and superb tonality. Pyro film developers also offer a lot of detail in all shades of grey and high-energy, plus a capacity for compensation while using the nominal speed of the film efficiently. This developer comes in two parts, A and B, for better shelf life, which you mix once they are diluted in the quantities required and used as a one-shot developer. Only small amounts of the developer are needed to make a working solution, so a 10ml measuring syringe for accurate mixing is recommended. The needed concentrate is consequently expressed in percentages. To know how much you need of each part, multiply the final volume of the developer you require by the percentage of each part. To obtain the necessary chemical reaction, it is essential that you first mix Part A with water, then add Part B with water and then mix them together. Please also note that working solutions cannot be reused.
