Although microfiche and microfilm can have a shelf life of up to 500 years, this estimate assumes ideal storage conditions, which are rarely achieved. In practice, film often begins to decay much sooner, especially when handled frequently.
To check for signs of decay, look for:
- Bumps, bubbles, or blemishes
- A vinegar-like odor
- Fragility or brittleness
- Stickiness
- Mold or fungus
If you notice any of these issues, it’s best to digitize your film as soon as possible to preserve the information before further deterioration.