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Archiver > TX-CEMETERY-PRESERVATION > 2004-07 > 1089985469


From:
Subject: Do you use Archival Mist??
Date: Fri, 16 Jul 2004 09:44:29 EDT


A discussion on one of the other lists I participate in has been on the use
of Archival Mist ... I thought I'd send this along for anyone using it or
thinking of using it.
Several times, in several places, I've pubished my list of archival
products & information list - if anyone needs it again, or never got it in the
first place - let me know.
Trevia Wooster Beverly
Houston, Harris County, Texas
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Instead of me trying to tell about it--straight from the website
< http://www.webyfl.com/index.asp?PageAction=Custom&ID=57 >
and I should have read it--I won't use it anymore on photos.
[from Kathie In Montana]

1. What is Archival Mist?

Archival Mist preserves and protects all forms of paper-based materials. It
deposits a safe, non-toxic alkaline buffer into the structure of the paper.
This buffer material neutralizes acids that can rapidly weaken the paper and
cause it to become brittle. The buffer materials are microscopic particles
of an alkaline compound (magnesium oxide). The particles are dispersed and
suspended in an inert liquid material (a blend of non-toxic, fluorinated
materials). When the product is sprayed on paper, the buffer particles blend
with the paper structure. The inert liquid simply evaporates. Because the
formula contains no water, the liquid does not make the paper wet and it
will not cockle or stiffen from the application. The buffer particles
readily absorb and neutralize the acids in paper. The material continues to
absorb acid over the life of the paper. This is a permanent treatment for
the life of the paper.

2. What materials will Archival Mist protect?

Archival Mist is suitable for all paper-based materials, including newsprint
letters and envelopes, certificates, awards, postage stamps, books,
pamphlets and artwork. The product contains no solvents and will not affect
inks, adhesives, leather, plastic, metals or fabrics. If sprayed on
non-absorbent materials (i.e. table tops, plastic, etc.), a light coating of
alkaline material will be noticeable. This can be cleaned with a soft, dry
or slightly damp cloth.

3. Is it safe for photographs?

The Image Permanence Institute tested Archival Mist and determined that it
satisfies the requirements of the Photographic Activity Test (PAT). But THE
PRODUCT IS NOT INTENDED FOR USE ON PHOTOGRAPHS, and photographs

will not benefit from the product. Photographs can safely be stored with
treated
materials with no adverse effect from the treatment. If sprayed on a
photograph, a light coating of alkaline material will be noticeable. This
can be removed with a soft, dry cloth.

4. Is It Safe For Colors and Inks?

Archival Mist contains no solvents and no water. Independent testing of
hundreds of ink and paper samples from 1800 to now have found no inks or
colors which are dissolved or caused to run or bleed by this material. In a
few cases, the actual shade of a color may be affected by the change in pH
from acid to alkaline. But even pH sensitive colors are often not affected
unless the paper becomes wet with water. Archival Mist should not be used on
"blue prints" or other similar materials because these colors may be
affected by raising the pH.

5. What about glossy or encapsulated materials?

Archival Mist will protect glossy materials. After applying the product,
wipe off any excess surface coating with a soft, dry cloth. The product does
not penetrate the plastic coating of encapsulated materials.

6. Does it stop paper from yellowing?

No, papers like newsprint contain chemical impurities that are affected by
light and oxygen over time. These will still tend to turn yellow.

7. How will it affect postage stamps?

Archival Mist will neutralize acid and provide a protective alkaline buffer.
It will not dissolve inks or adhesives, and it will not interfere with
taggent materials.

8. Is it hazardous in any way?

The ingredients in Archival Mist are non-hazardous, non-toxic and
non-flammable. The material dries odor-free, and it can be used in spaces
with normal ventilation with no special exhaust requirements. Even though
the product is very safe, you should always consult with a professional
conservator before treating any artifact that has a high commercial value.

9. Is there a test to see if it works?

Many companies sell products to test for acids in paper. These require you
to use a special dye to place a permanent mark on the paper, or to use a
special test strip and place a drop of water on the paper. On the pH scale
of 0-14, a pH of seven is neutral (pure water). A pH of less than 6.5 is
undesirable for paper.

10. Is there a shelf life?

Archival Mist can be stored indefinitely and will not lose its effectiveness


11. Can I use Paper Bright and Archival Mist together?

Yes, in fact, using them both gives your paper the maximum benefit:
acid-free and yellowing resistant.

12. How is Archival Mist sold?

The product is sold in two sizes: a 5.3 ounce pump spray bottle and a 1.5
ounce aerosol. The spray bottle is pressurized by pumping air in with the
cap. A bottle contains enough material to protect at least 25 square feet of
paper. This means one bottle will treat up to 300 typical (3" x 4")
clippings or scrapbook items at a cost of about 10 - 15 cents each. The
aerosol can will treat proportionally fewer items and is self pressurized.

13. Any handy tips on using Archival Mist?

a) Make sure you shake the bottle frequently while using it. b) Pump plenty
of air into it. c) If your nozzle clogs up, soak it in vinegar (not water).

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