Archival Permanence: The ISO Standard for Records Intended to Last — paper permanence, material specification, and household document production

Whether a document survives is, at bottom, a question of chemistry rather than aspiration. Ordinary A4 copier paper — the sort in everyday household use — is acidic, lignin-bearing, and begins to yellow and embrittle within decades. Against that, ISO 9706:1994 (the international standard for permanent paper) sets four material thresholds, and those thresholds separate paper capable of lasting several centuries from paper that will not see out a generation. The premium for the better stuff is small: roughly £0.10–£0.30 more per sheet. What follows describes the chemistry of paper degradation, then renders the ISO 9706 specification in practical terms; it takes in ink permanence, storage conditions, and physical handling, treats digital document permanence as an instructive contrasting case, and ends by proposing a minimum viable archival standard for households producing records that need to remain legible for several decades. The bottom line is practical. A household that produces a will, Lasting Power of Attorney, or other high-consequence document on ISO 9706-compliant paper, prints or writes it with archival ink, and stores it sensibly, ends up with something still readable in 2100 and beyond. Produce the same document on standard office paper, and it may not be.