The use of Berg Selenium Toning Solution on warm tone papers results in reddish brown tones on toning when immersed 2 to 10 minutes. The use of Berg Selenium Toning Solution on warm tone papers results in reddish brown tones on toning for 2 to 10 minutes in Berg Selenium Toning Solution, diluted 1 part toner to 3 parts of water (1:3). Other papers may give little or no color change. To avoid color change, but protect the image and increase D?max (deepen dark blacks and increase contrast somewhat), dilute 1 part toner with 10 to 30 parts of water, and tone for about 2 to 10 minutes. After toning, use fresh Berg Bath solution and wash thoroughly to achieve maximum archival protection.
The Berg Color Toning System provides a very versatile method for the color toning of black and white print or transparencies. The dye based system can produce a wide range of colors not available with metal salts type toners. Colors may be mixed to achieve just the right color desired. Works on all black and white photographic materials including film, fiber and resin coated papers and stabilization materials. 1oz. bottle of yellow toner