Vial CF by Dose Calibrator Manufacturer: No Copper Sleeve
| Manufacturer | No. of units | Mean vial CF |
| Biodex | 23 | 1.438 (range, 1.064–1.626) |
| Capintec | 118 | 1.274 (range, 0.823–1.757) |
| Empos Ltd. | 1 | 0.988 |
| Medisystem | 2 | 0.922 (range, 0.890–0.954) |
| MIE Medical Imaging Electronics GmbH | 1 | 1.312 |
| Nuclear Associates | 1 | 1.298 |
| Nuklear Medizintechnik | 9 | 1.193 (range, 0.977–1.534) |
| PTW Freiburg GmbH | 6 | 1.069 (range, 0.917–1.207) |
| Radcal | 1 | 1.227 |
| Syncor | 1 | 1.224 |
| Veenstra | 4 | 1.210 (range, 0.996–1.332) |