## Common ground
All options refer to containers (bottles) used for storing liquids or solids, differing only in material.
## Options at a glance
**3926.90 – Made of plastic material**
- **Defining trait:** Constructed from synthetic polymers like PET, HDPE, or PP, typically lightweight and flexible.
- **Typical examples:** Water bottles, shampoo containers, disposable food jars.
- **Best fit when:** The bottle is lightweight, impact-resistant, and commonly used for single-use or everyday consumer goods.
**6903 – Made of refractory ceramic**
- **Defining trait:** Designed to withstand extremely high temperatures (e.g., over 1000°C), often used in industrial settings.
- **Typical examples:** Crucibles, furnace linings, high-temp lab containers.
- **Best fit when:** The bottle must endure intense heat or chemical exposure in industrial or laboratory environments.
**6909.1X – Made of ceramic**
- **Defining trait:** Non-refractory clay-based material, typically fired at lower temperatures; brittle but aesthetically pleasing.
- **Typical examples:** Decorative vases, tea jars, traditional storage pots.
- **Best fit when:** The bottle is for display, traditional use, or low-temperature storage with emphasis on appearance.
**7017 – Made of glass**
- **Defining trait:** Transparent, chemically inert, and recyclable; often used for food, beverages, or pharmaceuticals.
- **Typical examples:** Wine bottles, medicine vials, cosmetic jars.
- **Best fit when:** The bottle requires clarity, purity, or long-term storage of sensitive contents.
## Key differences
| Feature | 3926.90 (Plastic) | 6903 (Refractory Ceramic) | 6909.1X (Ceramic) | 7017 (Glass) |
|---------------------|-------------------|----------------------------|-------------------|--------------|
| Temperature resistance | Low to moderate | Very high (>1000°C) | Low | Moderate |
| Transparency | Usually opaque | Opaque | Opaque | Transparent |
| Common use | Daily consumer | Industrial/lab | Decorative/artisan| Food/drug |
## How to choose
- Is the bottle used for high-heat applications? → 6903
- Is it transparent and used for food or medicine? → 7017
- Is it lightweight, flexible, and disposable? → 3926.90
- Is it decorative, non-transparent, and made from fired clay? → 6909.1X
## Overlaps & pitfalls
A glass bottle may also be used in labs (overlapping with 6903), but only if heat-resistant; standard glass does not qualify. Refractory ceramic is a subset of ceramic, so 6903 and 6909.1X are mutually exclusive by function. If unsure, prioritize the **main functional purpose**: storage, heat resistance, or aesthetics