Centennial Printing-out Paper (P.O.P.) is the only alternative-process paper manufactured commercially. While other alternative processes depend on paper hand-coated by the developer, P.O.P. is machine-coated: when you open the packet the image is formed by the action of light during exposure.

The scientific principles behind P.O.P were discovered by Johan Heinrich Schlze in 1727, when he observed the reaction between silver chloride and lime. From the late 19th century P.O.P., coated with silver chloride and gelatin emulsion, became one of the most popular photographic processes.

Kodak's Solio P.O.P. was finally discontinued in 1987. In 1995, Chicago Albumen Works Commissioned kentmere Photographic to produce Centennial P.O.P., keeping this fascinating historic process alive.

In addition to its use by photographers. P.O.P. is a wonderful educational tool, allowing students to see for themselves the magic of images appearing on sensitized paper and get an insight into the history of photography.

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P.O.P. Tester Pak 8X10 15+Chem \ 10,000 CENTENNIAL DW 8X10 50 sheets \ 16,200 CENTENNIAL DW 11X14 50 sheets \ 32,800 CENTENNIAL DW 20X24 25 sheets \ 48,900 CENTENNIAL RC 8X10 25 sheets \ 7,600 CENTENNIAL RC 8X10 100 sheets \ 25,500

The Chicago Albumen Works P.O.P. tester pack comes with Gold toner, fixing solution, machine coated P.O.P paper (DW 15 sheets 8x10) and instructions.P.O.P. paper (RC or DW) is available separately in various sizes.We import all our P.O.P. products and prices reflect this.