Volumetric Flask Class-A
| Hydocs Cat | Capacity (mL) | Diameter (mm) | Height (mm) | Stopper Size | Tolerance (mL) | Quantity |
| HY3151-1 | 1 | 13 | 65 | Jul-16 | ± 0.020 | 5 |
| HY3151-2 | 2 | 17 | 65 | Jul-16 | ± 0.020 | 5 |
| HY3151-5 | 5 | 22 | 70 | Oct-19 | ± 0.020 | 5 |
| HY3151-10 | 10 | 27 | 90 | Oct-19 | ± 0.020 | 5 |
| HY3151-20 | 20 | 39 | 110 | Oct-19 | ± 0.03 | 5 |
| HY3151-25 | 25 | 40 | 110 | Oct-19 | ± 0.03 | 5 |
| HY3151-50 | 50 | 50 | 140 | Dec-21 | ± 0.05 | 5 |
| HY3151-100 | 100 | 60 | 170 | 14/23 | ± 0.08 | 5 |
| HY3151-200 | 200 | 75 | 210 | 14/23 | ± 0.10 | 5 |
| HY3151-250 | 250 | 80 | 220 | 14/23 | ± 0.12 | 2 |
| HY3151-500 | 500 | 100 | 260 | 19/26 | ± 0.20 | 2 |
| HY3151-1L | 1000 | 125 | 300 | 24/29 | ± 0.30 | 2 |
| HY3151-2L | 2000 | 160 | 370 | 29/32 | ± 0.50 | 1 |
| HY3151-5L | 5000 | 215 | 475 | 34/35 | ± 1.00 | 1 |