Preservation

Comparison of Drying Methods

Pocket-folders filled with documents were wet and dried. The item on the upper right was returned with items removed from the pockets and inserted as a single grouping within the folder.  Original order was disrupted and lost.  

Slide 30
Comparison of Drying Methods
Kaplan/Ludwig 2003

This juxtaposition of dried records illustrates the degree of distortion that occurred in the methods considered.  Equal numbers of printed forms from 1960’s machine-made card stock with pen and pencil entries were set side-by-side.  Vacuum freeze-drying processes produced the least distortion followed by air-drying.  Dehumidification drying performed by a vendor off-site and on-site yielded records with the greatest increase in volume and cockling. 

Slide 31
Comparison of Drying Methods
Kaplan/Ludwig 2003

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