That's a lot of things to test for, so I imagine that manufacturers who certify their products to this level of quality would charge a premium for their products. If we don't want to spend time testing the materials ourselves, does anyone know which manufacturers supply the archival mounting materials to the Library of Congress in the US? This way for a premium price, we could at least be confident that what we were using should be around for our grandkids to appreciate. regards Peter Badcock On 6/9/05, Edward C. Zimmermann <edz@xxxxxxx> wrote: > > Of course. That's why there are specifications such as LOC's Spec > 400-402-8/19/02 > http://www.loc.gov/preserv/supply/specs/400-402.html > for mounting board which include among other lignin tests ASTM D 1030, > tests > for metals etc. and, of course, RIT/IPI's PAT. > ============================================================================================================= To unsubscribe from this list, go to www.freelists.org and logon to your account (the same e-mail address and password you set-up when you subscribed,) and unsubscribe from there.