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To be considered "proper" for archival or professional art use, paper should meet these standards:

Look for "internally and externally sized" papers (like Accademia ), which allows the surface to handle ink or wet media without excessive bleeding. Acideria Talla

There is also a specific luxury brand called Proper Papers , though they primarily specialize in premium rolling papers rather than traditional stationery or art paper. Key Characteristics of "Proper" Archival Paper To be considered "proper" for archival or professional

Some papers include a 2–3% calcium carbonate buffer to protect against environmental acids. Acideria Talla

This is paper with a neutral or basic pH (7.0 or higher), designed to prevent yellowing or becoming brittle over time. It is often referred to as "permanent paper" and is essential for long-term document preservation.