What Does Acid-Free Actually Mean?
Acid-free and lignin-free are printed on almost every paper label in the shop, which makes them easy to skim past. They are measuring two different things, only one of them is about pH, and neither is a guarantee that a sheet will survive a sunny window. This guide will cover what the terms actually certify, why lignin is the one that yellows your layout, and which projects justify paying for archival stock.
This guide is still being written. It will be published here when it is finished. No partial drafts, no filler.