| Clue | Source | Date |
|---|---|---|
| Lab tube with a bulb | New York Times | 31 Dec 2023 |
| Liquid-measuring tool | ||
| Lab dropper | New York Times | 26 Jun 2022 |
| Lab tube | New York Times | 26 Feb 2021 |
| Calibrated glass tube | Family Time | 24 Mar 2019 |
| Thin glass tube used as a dropper in a lab | ||
| Measuring tube (var.) | Universal | 12 Feb 2016 |
| Lab vessel | New York Times | 30 Jan 2016 |
| Lab vessel | ||
| Measuring tube (var.) | ||
| Lab tube | ||
| Chem lab tube | ||
| Chem lab tube | ||
| Chemical dropper | ||
| (Var.) | ||
| Laboratory tube (Var.) | ||
| Lab measuring tube (Var.) | ||
| Lab measuring tube (Var.) | ||
| Laboratory tube | ||
| Lab measuring tube | ||
| Lab tube | ||
| Lab tube | ||
| Lab measuring tube | ||
| Lab measuring tube | ||
| Lab tube | ||
| Calibrated tube | ||
| Measuring tube | ||
| Tiny lab tube | ||
| Lab glassware | ||
| Chemist's glass tube. | ||
| Suction tube. | ||
| Slender glass tube: Var. | ||
| Laboratory tube. | ||
| Slender tube for transferring fluids. |