- Reinforced bead at top
- 300 mL and larger sizes have tooled necks
10 and 30 mL sizes are designed from ASTM Specification E 147; 100 mL through 800 mL sizes are designed from ASTM Specification E 1377, Type 1 requirements.
| Thomas No. | Capacity (mL ) | Mouth i.d. (mm) | Length (mm) |
| 4954D20 | 30 | 15 | 178 |
| 4954D26 | 100 | 18 | 210 |
| 4954D38 | 500 | 29 | 320 |
| 4954D50 | 800 | 32 | 365 |