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| Size | Approx. constant, mm2/s2(cSt/s) | Kinematic Viscosity Range mm2/s(cSt) | CU Uncalibrated Series | CU Calibrated Series | |
| 25* | 0.002 | 0.5 - 2 | 9721-J50 | 9721-K50 | 怡兴 |
| 50 | 0.004 | 0.8 - 4 | 9721-J53 | 9721-K53 | 怡兴 |
| 75 | 0.008 | 1.6 - 8 | 9721-J56 | 9721-K56 | 怡兴 |
| 100 | 0.015 | 3-15- | 9721-J59 | 9721-K59 | 怡兴 |
| 150 | 0.035 | 7 - 35 | 9721-J62 | 9721-K62 | 怡兴 |
| 200 | 0.1 | 20 - 100 | 9721-J65 | 9721-K65 | 怡兴 |
| 300 | 0.25 | 50 - 250 | 9721-J68 | 9721-K68 | 怡兴 |
| 350 | 0.5 | 100 - 500 | 9721-J71 | 9721-K71 | 怡兴 |
| 400 | 1.2 | 240 - 1200 | 9721-J74 | 9721-K74 | 怡兴 |
| 450 | 2.5 | 500 - 2500 | 9721-J77 | 9721-K77 | 怡兴 |
| 500 | 8 | 1600 - 8000 | 9721-J80 | 9721-K80 | 怡兴 |
| 600 | 20 | 4000 - 20000 | 9721-J83 | 9721-K83 | 怡兴 |
| 650 | 45 | 9000 - 45000 | 9721-J86 | 9721-K86 | 怡兴 |
| 700 | 100 | 20000 - 100000 | 9721-J89 | 9721-K89 | 怡兴 |
