On what can you use PEC-12 ? PEC-12 has been tested by an independent organization concerned with photographic preservation. It found that PEC-12 will not cause any hidden or long term damage to photographic images. It has no adverse effects on long term B&W or color image permanence or on dye stability. Copies of these findings are available upon request. Beware of products sold for cleaning photo materials which contain peroxide formers (read the Material Safety Data Sheet (MSDS). These chemicals react with any moisture in the air to form hydrogen peroxide, a strong bleaching agent and will irreparably destroy (by bleaching out) an emulsion. (The real danger with these products is that by the time the damage is discovered, it's too late to save the image.) PEC-12 will damage certain materials such as non-hardened gelatin or albumen emulsions and many dye-sublimation materials. Care should be taken whenever using this product on a print or film of unknown nature, including older B&W and newer B&W processed by "Fine Art" photographers. A safety test should be done on each print or film emulsion as described under the heading "When NOT to use PEC-12". When to use PEC-12. It will remove a wide variety of non-water-soluble residues from photo materials, leaving them grease, oil and ink-free. Among the materials on which PEC-12 can be safely used are: All modern hardened gelatin films, both B&W and color (including, but not limited to C-41, E-6 and K-14 processes); All modern hardened gelatin prints, both B&W and color, on fiber, resin coated, and polyester bases. This includes prints made with EP-2, RA-4 and Ciba (Ilfo)chrome processes. PEC-12 should be used sparingly; a little bit goes a long way. In most cases, there is no need to spray it directly onto the photo or film. Spray a drop or two onto a PEC*PAD, cotton swab or pad. Don't drench the applicator with PEC-12 which will waste the solution and will not increase effectiveness. If excessive amounts are applied to an emulsion, there may be a white haze left on the surface when the PEC-12 evaporates. The haze is not harmful and can be easily removed by using a new applicator with less PEC-12. (The haze doesn't generally appear on prints, and if it appears on a slide/neg, it won't generally print.) Continued