Thursday, August 22, 2013

Keys to Preservation - Dealing with dirt


           What are the factors that cause paper, or anything else organic for that matter, to deteriorate? It’s pretty obvious if you just think about it.  Light, dirt, changes in temperature and humidity, pests, pollution.  Consider the smog in Singapore that was in the news recently. Trying to protect paper in that environment would be tough unless you had special facilities.  In West Texas, the dust storms are a way of life and it is impossible to keep the fine silt from filtering in through the smallest crack.  You could go crazy trying to keep your house dust free.  Archives must address these enemies to collections every day.  To do it right can be very costly.  If you doubt me check out the steps taken by Library of Congress to protect the United States Constitution and the Declaration of Independence

Let’s consider each of the conditions leading to deterioration one at a time over several blogs.  Since we started talking about pollutants and dirt, let’s begin there.  Did you note what the National Archives has the Declaration of Independence in an oxygen free encasement filled with inert argon gas?  Well, most places can’t do that with their fragile items.  Next best is to try to control the dust and dirt. 

1.                    Store all materials in archival enclosures. The type of enclosure depends on the composition of the item.  Photographs have different requirements than paper, for example.  All of the archival supply houses have enclosures by material type.  You want something that is inert – i.e. no chemicals.  Just housingdocuments  in archival boxes is a huge step to decreasing dust.
2.                    Keep the storage area clean and dust free as possible.  Microfiber cloths are great for cleaning in home or in the archives. They have no nasty chemicals to cause damage.
3.                    Hepa filters for the vacuum!!!! Using them at home is also a good idea, especially with the rise in allergy related illnesses like asthma.
4.                    Storage areas should not be near anything that produces possible pollutants like a copy machine in an office.
5.                    Change the filters for the heating and air conditioning system frequently. You should do that at home as well as in the archives. It will keep the air cleaner and extend the life of your heating and cooling system too. Win, win.

There has been lots and lots written on line about the topic of protecting paper and photographs and whatever.  Here’s a short list. Conserv-o-grams by the National Park Service are great.  They are aimed at museums, but the information is relevant for anyone.  They have several publications about paper and photographs. (http://www.nps.gov/museum/publications/conserveogram/cons_toc.html

An additional resource is the Canadian Conservation Institute CCI notes.  Again these were written for museums, but like the National Park Service they have articles about the care of paper as well as general preservation information. http://www.cci-icc.gc.ca/publications/notes/index-eng.aspx

A few others of many, many more are:

Check out what the experts recommend. Being a good housekeeper is the best approach to protecting paper documents from dust and dirt at home or in an archive.  More on preservation next time.

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