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MACO Glassine Sleeves for archiving 35mm film negatives.
A practical method of storing negatives and contact proof pages is to buy a paper (glassine) type of storage sheets.
These negative sleeves are made of finely-ground pulp paper which is largely grease-proof and water resistant. The high level of transparency is achieved by a special mechanical treatment called calendaring. MACO glassine sleeves are made of acid- and lignin-free photo glassine.