a stop bath,made of either a light acetic or citric acid. It will neutralize the alkaline developer quickly and bring development to a complete stop. Alternatively, a plain water rinse may be used.
Excess fixer causes staining and highlight loss with some toners. This step removes enough fixer to avoid this problem. For selenium toning, a brief 10-minute wash is sufficient. For direct sulfide toning, a 30-minute wash is required. However, the bleaching process required for indirect sulfide toning calls for a complete 60-minute wash prior to toning. Otherwise, residual fixer will dissolve bleached highlights before the toner has a chance to ‘redevelop’ them.