State-of-the-art photochemistry for every darkroom and suitable for use with all materials. All products are ultra-low in toxicity, capable of the finest results and best tonality that can be achieved with modern papers and emulsions. Silvergrain chemicals are the most environmentally-friendly photo chemicals currently on the market, and are free of many of the toxic and allergenic compounds commonly found in darkroom chemistry. Formulated for ease-of-use, long shelf life and outstanding archival permanence by chemist Ryuji Suzuki, the Silvergrain range of products represents the first major advance in photo chemistry for over a decade.