Isothermal Carousel LN2 Freezer

The CBS isothermal carousel LN2 freezers are designed to meet all temperature, storage and security specifications for cryogenic sample preservation. They differ from the normal isothermal LN2 freezers by the presence of a small upper opening and an innovative interior rotating carousel. The small opening reduces the liquid nitrogen consumption and provides a lightweight user-friendly lid and a consistently low temperature in the freezer.

The great advantage of isothermal (carousel) LN2 freezers is that samples are stored at liquid nitrogen temperatures without liquid nitrogen contact. These freezers have a double wall which contains the liquid nitrogen. The nitrogen vapour is then continuously circulated inside the tank through little holes at the top, guaranteeing a superb temperature uniformity of around -190°C throughout the inner tank. That way, all disadvantages or problems that can occur with liquid nitrogen are completely avoided.

First of all, storage in liquid nitrogen causes significant cross-contamination risks due to the liquid phase, while these risks are extremely low in the gas phase.

Secondly, weak temperature uniformity or strong temperature fluctuations cause big stress to biological samples, strongly reducing their later viability. The CBS isothermal freezers avoid this problem by the continuous vapour circulation and homogenous temperature.

Finally, the isothermal freezers offer a high user safety, as the risk of splashing or coming in contact with liquid nitrogen is minimized, the visibility inside the tank is increased and handling of the samples has become much easier and convenient.

In total, 4 different isothermal carousel freezers are available with various sample storage capacities. Each freezer mainly features castors for optimal mobility, a stainless steel construction, a round space saving design and a complete monitoring system. Furthermore, an extensive selection of frames, inventory racks and canisters are available to complete the system. In short, the CBS isothermal (carousel) LN2 freezers are the preferred choice for 100% safe and user convenient cryogenic sample preservation.