Formulary's Chicago Albumen Works POP Toner is a thiocyanate and gold toning formula for use with CAW's gelatin chloride printing-out-papers. The color of the printed-out image may be variously described as blood-red, rust-red, brick-red or plum-red. This kit contains requisite chemicals to compound the toning formula recommended by the Chicago Albumen Works for their gelatin chloride P.O.P. The two stock solutions will keep indefinitely. Enough for about 50 8x10" prints.