Duralong Cotton is a 100% cotton, unbuffered, high-purity paper, containing no chemicals whatsoever. It`s produced with a "round machine"; with this type of processing the paper is not too pressed (un-calendered) very porous to allow maximum air flow and prevent any potentially harmful build up of gases; for this reason, this paper can safely be used for the storage of all kinds of photographic materials be they negatives or prints and irrespective of the photographic technique used to create them. Although primarily geared towards the storage of photographic material, the paper is equally well suited for the storage of a multitude of other museum and archival treasures, such as textiles, historic documents, stamps, coins, archaeological objects or any other item requiring a high - quality material and a non-alkaline enviroment.

TECHNICAL SPECIFICATIONS

• 100% pure cotton fibre
• Unbuffered
• pH 6.7 - 7,0
• Non-calendered surface to allow greater air flow
• Sulfur <0,0001%