Our hydrometer jars are made of borosilicate glass and feature a beaded rim with a circular base. They are all sized properly to eliminate surface tension effects that lead to inaccurate readings. Models 21050-1000-L and 21000-1000-L have a graduation line at 1000 mL for precise filling and are used as a sedimentation cylinder.
Specifications
| Item No. | Capacity | Max Hydrometer Length | Includes Graduation Line |
| 21050-100 | 100 mL | 7.3 in. (185 mm) | No |
| 21050-250 | 250 mL | 11 in. (280 mm) | No |
| 21050-500 | 500 mL | 14.2 in. (360 mm) | No |
| 21050-600 | 600 mL | 15.4 in. (390 mm) | No |
| 21050-1000 | 1000 mL | 15.7 in. (400 mm) | No |
| 21000-1000-L | 1000 mL | 15.2 in. (385 mm) | Yes |
| 21050-1000-L | 1000 mL | 15.7 in. (400 mm) | Yes |
