Formulary's POP Lead-Gold Toner-Fixer contains alum, lead acetate, gold chloride, and sodium thiosulfate. This toner-fixer produces rich brown tones. The solution is long lasting and has a capacity of about 8 8x10" prints per 100 ml of working solution. Prints must be toned for at least 10 minutes to allow the gold to tone and the print to fix.