用于测量透明液体。
全长345mm
样品体积约为4毫升，
配有ISO 17025校准证书
| Part No. | Size | Constant | Range (mm²/s) |
| 1631/01 | 1 | 0.003 | 0.6 to 3 |
| 1631/02 | 2 | 0.01 | 2 to 10 |
| 1631/03 | 3 | 0.03 | 6 to 30 |
| 1631/04 | 4 | 0.1 | 20 to 100 |
| 1631/05 | 5 | 0.3 | 60 to 300 |
| 1631/06 | 6 | 1.0 | 200 to 1,000 |
| 1631/07 | 7 | 3.0 | 600 to 3,000 |
