Liebherr SUFsg 5001 Laboratory Ultra-low Temperature Freezer, 477 l, -40 °C to -86 °C, 993356951

To store highly sensitive samples safely at extremely low temperatures, you need a piece of equipment you can rely on. The Liebherr SUFsg 5001 is a laboratory ultra-low temperature freezer for the temperature range from -40 °C to -86 °C, which reliably stores even sensitive substances. The unit is particularly robust and user-friendly in design; the housing and door are made of steel, whilst the inner chamber is made of durable stainless steel. The SUFsg 5001 is part of Liebherr’s MediLine series for scientific sample storage and, with a net volume of 477 l, represents the medium-sized model of the three SUFsg sizes stocked by LT Laborhandel.

Technology and cooling capacity

The temperature is displayed digitally on the outside and can be set within a range of -40 °C to -86 °C, with a permissible ambient temperature of +16 °C to 32 °C. Temperature stability and consistency are tested in accordance with the EN 60068-3 test procedure. The natural refrigerant R 290 is used (charge: 150 g), an environmentally friendly choice with a low global warming potential compared to conventional synthetic refrigerants. In the event of faults, the unit issues visual and audible warnings, ensuring that temperature deviations are immediately detected. Via a retrofittable LAN interface, the ultra-low temperature freezer can, if required, be integrated into an existing laboratory or hospital network and monitored remotely.

Interior design and ease of use

The stainless steel inner chamber is particularly durable and easy to clean, an important factor for day-to-day laboratory operations, especially when samples are regularly stored and retrieved and the interior therefore needs to be cleaned frequently. Foam-insulated inner doors provide additional stable insulation and temperature control. Four shelves in the freezer compartment ensure organised storage; three of these are height-adjustable and adapt to different container sizes, from small cryoboxes to larger sample containers. The solid aluminium handle with an integrated opening mechanism makes it easy to operate, even whilst wearing gloves, as is common in everyday laboratory work. The door hinge is permanently fitted on the right-hand side. Defrosting is carried out manually, which is standard for an appliance designed for such low temperatures, as automatic defrost cycles at -86 °C would be technically more complex and less suitable for sample safety.

Typical applications

The SUFsg 5001 is designed for scientific use and is suitable for laboratories that need to store enzymes, reagents, biological samples or other temperature-sensitive substances permanently at very low temperatures. Particularly when samples must remain unchanged for months or years, a stable, well-monitored cold chain is crucial; continuous temperature monitoring with visual and audible alarms ensures precisely this, without staff having to check the temperature manually.

• Research institutions and biobanks requiring long-term storage of sensitive samples
• Pharmaceutical development requiring a stable, monitored cold chain
• Clinical laboratories with long-term storage of reagents and biological material
• Sites wishing to switch to a water-cooled version (H72) if required

Three-stage monitoring system

In addition to visual and audible alarms in the event of a fault, an integrated 12-volt battery provides backup power for at least 72 hours in the event of a power cut, significantly longer than with most laboratory refrigeration units in the positive temperature range. Those requiring even more comprehensive monitoring can supplement the basic system with expandable features such as CO2 emergency cooling and online monitoring. The SUFsg 5001 is part of the SUFsg series from LT Laborhandel, which includes two further models, the more compact SUFsg 3501 and the larger SUFsg 7001, each featuring the same MediLine positioning and the same monitoring concept.

Installation and connection

With external dimensions of 196.6 x 92 x 108.2 cm (H x W x D) and a net weight of 254 kg, the SUFsg 5001 is designed for a permanent installation in the laboratory. The unit operates at 230 V with a connected load of 7.0 A and is supplied with a 2,800 mm long connection cable; a standard laboratory power supply is therefore sufficient. As the unit is 101.7 cm wide when the door is open, sufficient space for manoeuvring should be allowed for at the installation site. Given its weight of 254 kg, a sturdy, level access route is recommended for transporting the unit to its final installation site, particularly if the unit is not to be installed at ground level.

Technical details

Scope of delivery

• 1x Liebherr SUFsg 5001 laboratory ultra-low temperature freezer, air-cooled model
• User manual

Individual requirements and procurement service

Do you require the water-cooled version with cascade cooling, a different Liebherr model size, accessories for sample storage, or assistance in selecting the right ultra-low temperature freezer for your laboratory? LT Laborhandel will be happy to assist you with procurement and configuration via our procurement service.