Preservation Learning Center
The industry source for engineering-based animation cel preservation. Stop guessing with "acid-free" labels and start managing risk with chemistry, physics, and data.
1. The Framework (Start Here)
If you only read one thing, make it this. Our core philosophy for managing risk over time.
Essential ReadingAnimation Cel Preservation Framework & Tiers
A practical tier system that maps storage conditions (Temperature, RH, Ventilation) directly to expected cel lifetime. Learn why "Cool & Dry" isn't specific enough.
2. Understanding Vinegar Syndrome
What is that smell? Why is the cel warping? Understand the enemy.
The Silent Killer: Vinegar Syndrome Overview
A plain-language guide to why acetate breaks down, the "point of no return," and why ventilation alone cannot cure it.
TimelineThe Progression of Cel Degradation
From the first faint odor to catastrophic warping and channeling. Learn to spot the stages before damage becomes permanent.
ChemistryWhy Does It Smell Like Vinegar?
Using your nose as a data point. How acetic acid off-gassing relates to the physical condition of the plastic.
3. Diagnostics & Testing
Don't guess. Test. Tools to verify if your storage is actually working.
4. Storage Solutions & Environment
Engineered advice on temperature, humidity, binders, and framing.
Temperature & Humidity: The Control Levers
Why "room temperature" is killing your cels. Understanding Absolute Humidity vs. Relative Humidity for preservation.
DisplayFraming Engineering: Why Standard Frames Fail
Most "archival" frames are acid traps. Learn about failure modes, microclimates, and how to display cels safely.
StorageVertical vs. Horizontal Storage
An analysis of pressure, weight, and structural risk in binders (Itoya) versus boxes.
5. Scientific Deep Dives
For those who want to understand the molecular mechanics.
The Chemistry of Hydrolysis
A deep look at ester bond cleavage, autocatalysis, and the molecular reaction that drives degradation.
PhysicsAcetic Acid Emission Mechanics
How acid leaves the film. Understanding diffusion rates and why trapped air accelerates decay.
PhysicsThermal & Moisture Fatigue
How cycling temperature and humidity causes physical fatigue and cracking in paint layers.
ReferenceCel Materials History & Reference
From Nitrate to Acetate to Polyester. A history of the plastics used in animation.
6. Collector Myths & Perspectives
Common misconceptions debunked with engineering logic.