The Preservation Directorate at the Library of Congress developed specifications for the supplies and materials used to house the Library's collections. The specifications listed are made available as a public service and are subject to change at any time.
The Library does not provide product testing services.
Any commercial reproduction of these specifications that implies endorsement of a product, service, or materials, in any publication, is strictly prohibited by law.
Comments or questions about the specifications may be submitted to the Library's Preservation Directorate by clicking the Ask a Librarian button at the top of the page and selecting Preservation. The Library does not provide product testing services and will not respond to requests for product testing.
The pdf links above represent the most recent specifications. Specifications for other supplies may become available.
Library of Congress
Washington, D.C. 20540-4500
Internet form: Ask a Librarian.