
Gammacell 40 Exactor Research Irradiator
Low dose-rate research irradiator with two Caesium-137 sources, for precise irradiation of cell cultures, blood components and murine models.
The Gammacell 40 Exactor is a low dose-rate irradiator with a wide range of applications in radioimmunology, radiosensitivity and cell biology, such as the irradiation of mitotically inactive cell culture media, mixed lymphocyte cultures and cellular blood components. Its large ventilated sample container also makes it an excellent research tool for the development of murine models for cancer therapy.
- Two Caesium-137 sources and an electric drive mechanism give accurate results regardless of where specimens are placed
- Timer settings in increments of 1 second up to 100 hours, with manual or automatic operation
- Large ventilated sample chamber that swings out from the unit for loading and unloading
- Redundant systems monitor irradiation time and position of sources
- Irradiation cycle data is automatically logged and can be viewed via web browser
No prices online – you will receive a quotation with price and delivery time. Need accessories? Mention them in your request.

Technical data
| Radiation source | 2 × Caesium-137 (special form), nominal activity 55.5 TBq (1500 Ci) each |
|---|---|
| Central dose rate | Approximately 1.0 Gy/minute (±15 %) |
| Dose uniformity (typical) | ±7 % over a 260 mm diameter and a 100 mm height (max:min ratio 1.14) |
| Canister dimensions (internal) | Diameter 312 mm, height 105 mm, volume 8.0 L |
| Timer | 1 second to 100 hours in increments of 1 second |
| External dose rate | 6 µSv/h at 1 metre from the source, 20 µSv/h at 5 cm from any surface of the unit |
| Unit dimensions (H × W × D) | 1496 × 924 × 1229 mm |
| Weight | 2994 kg |
| Floor loading | 2715 kg/m² |
| Utility requirements | Single phase with ground, 300 VA: 100 V 50 or 60 Hz, 115 V 60 Hz or 230 V 50 Hz |
| Battery back-up | Yes, internal battery in the event of AC power failure |
Source: Best Theratronics, Gammacell 40 Exactor brochure (2013). Full specifications are available in the documents.



