Stabilizing what is fragile

Material that cannot survive being handled without intervention, and the judgment about how much intervention is acceptable.

Some specimens arrive already failing

Friable matrix that sheds with every touch. Acicular crystals that snap in air currents. A specimen cracked through and held together by geometry. Material that dehydrated in the car.

Doing nothing is a decision to lose it slowly; doing something changes the specimen. Both are real costs.

Consolidation

Applying a dilute adhesive to hold friable material together.

The requirements are that it be reversible, that it not change the appearance more than necessary, and that it not off-gas inside a closed box for the next thirty years.

Conservation practice favors materials that can be removed with a solvent later, and against anything that cures hard and permanent.

Applied dilute and repeatedly rather than thick and once, so it penetrates rather than sitting as a skin.

Support rather than treatment

Frequently the better answer. A specimen that is fragile in a drawer is fine in a fitted mount.

A custom cradle, a padded compartment, a rigid base the specimen sits into. None of it touches the specimen chemically and all of it removes the handling risk, which is where most of the damage was going to come from.

And a rule against handling: some specimens are photographed once and then not picked up.

Record it

Anything applied goes on the label and in the catalog: what, when, how dilute.

A future owner needs to know, a future conservator needs to know, and a buyer is entitled to know.

Undocumented consolidation found later reads as concealment even when it was careful work.

References