ANSI Standards
ANSI/NISO Z39.48-1992 (R2002)
American National Standards Institute "Permanence of Paper for Publications and Document in Libraries & Archives" document includes:
- Less than 1% lignin by weight
- pH minimum of 7.5
- Folding Endurance
- Tear Strength
- Alkaline Reserve
The ANSI standard clearly states that a product must have less than 1% lignin by weight to be considered permanent. Books printed on groundwood paper contain MUCH more than 1% lignin content—sometimes up to 10%--so any book that is published on groundwood paper does not meet this standard for permanence. Your book will NOT stand the test of time.






