Collections Storage, Environmental Care & Containers
Overview
Proper storage is the foundation of collection preservation. Environmental conditions, shelving, and housing materials all directly affect the long-term stability of objects. Even small improvements in storage conditions can significantly extend the life of a collection.
Storage Location & Environmental Conditions
The best storage environment is a dedicated, stable space with controlled conditions.
Best practice conditions include:
- Stable temperature and humidity
- Minimal exposure to light (especially direct sunlight and overhead lighting)
- Clean, dry, and well-ventilated space
If ideal storage is not available, choose the most stable interior room possible.
Avoid:
- Basements
- Garages
- Sheds
- Areas with frequent temperature or humidity fluctuations
These environments increase risk of mold, corrosion, and material breakdown.
Shelving for Collection Storage
Shelving materials play an important role in long-term preservation.
Recommended:
- Powder-coated steel shelving (epoxy, polyester, or acrylic finishes)
Avoid:
- Rusted or unstable metal shelving
- Older baked enamel-coated shelving (may off-gas harmful compounds)
- Wood shelving for sensitive collections
Wood can release acids and peroxides that contribute to deterioration over time.
Containers & Housing Materials
Smaller objects and paper materials should be stored in protective, stable containers.
Best practice materials:
- Archival-quality containers
- Acid-free materials
- Alkaline-buffered, neutral pH housing
These materials help prevent chemical deterioration.
Note: Avoid airtight plastic bins when possible. While they may seem protective, they can capture and hold moisture, damaging their contents.
Cost Considerations
Archival materials can be expensive but are a high priority for long-term preservation.
When archival materials are not available:
- Wrap objects in acid-free buffered tissue paper
- Avoid direct contact with non-archival materials
Cataloging Note: Storage conditions and housing materials should be consistently reflected in object records so that preservation risks and needs are clearly documented over time.