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| TEST TUBE | with rim, chemical | OD | Length | Quantity | |
| mm | mm | per case | |||
| 10 | 75 | 2000 | |||
| 10 | 100 | 2000 | |||
| 12 | 75 | 2000 | |||
| 12 | 100 | 2000 | |||
| 13 | 100 | 2000 | |||
| 15 | 100 | 1000 | |||
| 15 | 150 | 1000 | |||
| 16 | 125 | 1000 | |||
| 16 | 150 | 1000 | |||
| 18 | 150 | 600 | |||
| 18 | 180 | 600 | |||
| 19 | 150 | 600 | |||
| 21 | 150 | 400 | |||
| 21 | 180 | 400 | |||
| 25 | 150 | 300 | |||
| 25 | 200 | 200 |
A test tube, also known as a culture tube or sample tube, is a common piece of laboratory glassware consisting of a finger-like length of glass or clear plastic tubing, open at the top, usually with a rounded U-shaped bottom.