## Common ground
All options refer to album-like containers used to store or organize samples or collections.
## Options at a glance
**3926.90 – Plastic albums**
- **Defining trait:** Made primarily from plastic, offering durability and resistance to moisture.
- **Typical examples:** Clear plastic page binders, vinyl storage cases, lab sample holders.
- **Best fit when:** Samples are fragile, need protection from spills or dust, or require frequent handling.
**4820.50 – Paperboard albums**
- **Defining trait:** Constructed from paper or paperboard, typically lighter and more eco-friendly.
- **Typical examples:** Scrapbooks, archival photo albums, simple collection binders.
- **Best fit when:** Storage is for dry, non-sensitive items; emphasis is on aesthetics, low cost, or recyclability.
## Key differences
| Feature | 3926.90 (Plastic) | 4820.50 (Paperboard) |
|------------------|--------------------------|----------------------------|
| Material | Plastic | Paper/paperboard |
| Durability | High | Moderate |
| Moisture resistance | Excellent | Poor |
| Environmental impact | Higher | Lower |
## How to choose
- Is the album meant for long-term, frequent, or harsh handling? → 3926.90
- Are samples sensitive to moisture or chemicals? → 3926.90
- Is cost or eco-friendliness a priority? → 4820.50
## Overlaps & pitfalls
A product could use both materials (e.g., plastic sleeves in a paperboard cover), but the main material determines classification. The defining trait should be based on the primary structural material. If unclear, prioritize the material that forms the bulk of the album’s body