Black and white photographic papers can be toned with chemical toners. In the college you have the following available.
The main formula for each type is as follows: …
Good tones are obtained with normally exposed and developed conventional paper prints. Some modern papers even those described as ‘fibre’ are liable to give variable results and ‘blotches’. It is recomended that prints are given full exposure, and development, an acid stop, fixed in a simple non hardening fixer, and copiously washed. Work only under subdued lighting. …