The archival quality print and photo pages are made from premium high clarity polyethylene which contains no harmful chemicals to cause deterioration during long-term storage. Independent laboratory tests prove PrintFile preserver album pages store negatives, slides, transparencies and photos safely. They have passed the Photographic Activity Test per ANSI Standard IT9.2. These archival preservers are acid-free, containing none of the plasticisers, catalysts or solvents found in vinyl. PrintFile have appointed PEL as their European Importer.