| Category |
Criteria |
| Coarse |
- Apparently large and visually well-defined bodies of substance
- A small amount or less than half of the sample is in the form of a fine powder
|
| Coarse and Fine |
- Both visually defined bodies of substance and fine powder are present in approximately equal portions
|
| Fine |
- Powdery appearance
- A small amount or less than half of the sample is in the form of a coarse substance
|
|
