TEFCOLD SE 323 L Laboratory Freezer for Controlled Storage

A laboratory freezer maintains temperatures well below freezing to preserve samples, reagents or biological materials without degradation. It uses a compressor-driven refrigeration cycle to extract heat from the interior and expel it outside, creating a stable cold environment. The sealed system circulates refrigerant through coils, lowering the internal temperature to the set point and holding it there continuously. This method ensures uniform cooling throughout the cabinet, preventing hot spots that could compromise stored items.

The operator loads the samples into the supplied basket, then closes the door to seal the cabinet. The electronic thermostat is set to the required temperature between -45 °C and -5 °C. Once powered on, the compressor starts and the freezer cools to the target temperature, monitored by the internal sensor. An alarm sounds if the temperature deviates from the set range, alerting staff to potential issues. The unit remains in operation until manually switched off or unplugged, maintaining the cold chain without interruption.

The cabinet is constructed from white-coated steel, forming a rigid enclosure that resists corrosion and supports the refrigeration components. Four castors, two of which lock, allow the freezer to be moved across the floor and secured in place. The interior volume of 323 litres provides space for multiple storage baskets or shelves, organised to suit laboratory workflows.

Controls consist of an electronic thermostat with a digital or analogue interface, allowing precise temperature selection within the -45 °C to -5 °C range. The alarm function is integrated into the thermostat, providing audible alerts if the internal temperature rises above the set threshold.

A power rating of 0.5 kW indicates the electrical load the freezer places on the circuit, requiring a dedicated 220-240 V, 50 Hz supply. The temperature range of -45 °C to -5 °C covers ultra-low storage needs, such as for vaccines, enzymes or long-term biological samples. The 71 kg weight reflects the mass of the refrigeration components and insulation, making the unit stable but manageable for repositioning. The footprint of 1284 mm by 705 mm by 945 mm determines the floor space required in the laboratory or storage area.

Cleaning involves wiping the interior surfaces with a mild disinfectant solution, ensuring the basket and any shelves are removed and cleaned separately. The exterior is wiped down with a damp cloth to remove dust or spills. The castors should be checked periodically to ensure they rotate freely and the brakes engage securely.

The TEFCOLD SE 323 L laboratory freezer is categorised under professional refrigeration for clinical, research or pharmaceutical environments.