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This 50-pack of 16 x 20" Acid-Free Card Stock from Archival Methods is designed to have many uses. The card stock can act as a support, and prevent photographs or documents from bending inside of archival pages or sleeves. Photographs or documents can be mounted onto the stock and used as an album page. The stock can be used as a backing for a photograph inside of a frame. Instead of marking a matted print, you can write on the card stock, for information or easy identification of a print.
The white card stock is made out of alpha-cellulose pulp from purified wood fiber. No dyes, non-bleeding, and no alum were used in the manufacturing process. A lignin- and acid-free stock, it is pH-balanced at 9. Alkaline sizing was used internally and externally on the card stock, which has passed the Photographic Activity Test (PAT), confirming it is suitable for long-term storage. The weight of the card stock is 148 gsm.
Made from alpha-cellulose pulp
Acid- and lignin-free
Buffered with calcium carbonate 2 to 3% alkaline reserve
148 GSM paper weight
Paper pH of 9
Table of Contents
Alpha-cellulose pulp from purified wood fiber
Buffered with 2 to 3% alkaline reserve calcium carbonate
pH 9 (± 0.5)
Passes the PAT (Photographic Activity Test) ISO IT 18916 (formerly ISO 14523 ANSI IT9.16)
Lignin content is tested by TAPPI 236 cm-85 and has a Kappa number of less than five