Domain of a Knight

The personal website for me, Julian Lopez. Sometimes I go by the name Rerun. I'm a young dude with interests in technology, stationary, fountain pens, wheelchairs, postage, and comics.

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Recently I was helping out with an archival project with materials dating back to the 70's. Unfortunately, the paper used contained acid and there were some minor degradation issues. We were able to confirm the acidity of said paper via a PH tester (yellow indicated acid, purple indicated acid-free).

During my break I decided to test the paper I had in my bag (Tomoe River, Kokuyo Campus, Midori MD) and to my surprise it indicated that they were all acid-free! Is it standard for #fountainpen paper to not contain acid, and if so for what reason?

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