A zig-zag folded cotton paper enclosure used to secure negatives. It is made from the most expensive paper Beskid Plus has on offer, i.e. cotton paper. This material does not contain an alkaline agent - calcium carbonate - owing to which it is perfectly neutral and can come into contact with chemically "agressive" photographic materials.
Cotton paper: - PAT certificate - 100% cotton cellulose - pH 7.0 - colour: white - Kappa number < 5 - water absorbency: Cobb60 < 25 g/m2 - no dye migration - no optical brighteners - grammage: 95 g/m2
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