Kodak Rapid Selenium Toner is used to convert the metallic silver in B&W photographic media to more stable and archival silver selenide. It produces several cool chocolate-brown hues with warm-tone papers, purplish brown tones with neutral-tone papers, and very little or no change with cold-tone papers. Use the 1:20 dilution for print protection. To increase shadow contrast and maximum density with a minimum tone change, use a 1:20 or 1:40 dilution. You can also use this toner with black and white films. 

Kodak Selenium Toner SDS Sheet (English)

Kodak Selenium Toner SDS Sheet (International Translations)

CAT 1058536