National Lab laboratory freezer ProfiFrost PFU1645WN
The National Lab ProfiFrost PFU1645WN laboratory freezer is a reliable and energy-efficient solution for laboratories that want to safely store sensitive samples, reagents or pharmaceutical materials at temperatures from -20°C to -45°C. This model impresses thanks to its quiet, low-vibration compressor technology and maintenance-free refrigeration system. Users benefit from simple operation and high-quality materials that ensure a long service life. Similarly equipped appliances such as the [BINDER UF V 700] ultra-low temperature freezer often offer different volume sizes or extended interfaces in comparison, but here the compact design with a usable capacity of 130 liters and Ex interior for maximum safety scores points.
Rugged construction and reliability
This freezer is specially designed for everyday laboratory use and has a reinforced, galvanized outer shell made of white-coated sheet steel. With its Ex interior and no electrical ignition sources, the appliance is ideal for areas where highly flammable or sensitive substances are stored. The silent cooling system also impresses with particularly low noise emissions, as it operates almost vibration-free. This not only protects staff's ears, but also minimizes the effects of vibrations on sensitive samples or reagents.
Another advantage is the self-closing doors, which can be flexibly adapted to local conditions thanks to the interchangeable door hinge. The door is fitted with a lock to prevent unauthorized removal of valuable samples. The informative digital display allows users to keep track of the current temperature at all times, while the integrated alarm system emits both visual and audible warning signals if limit values are exceeded.
Overview of key features
- Temperature range: -20°C to -45°C, ideal for a wide range of samples and substances
- Gross capacity 140 liters, net 130 liters - sufficient space with compact external dimensions
- Ex interior without electrical ignition sources - increased safety when handling highly flammable substances
- Maintenance-free cooling system: air-cooled, quiet fully hermetic compressors
- Manual defrosting and low-noise operation for a trouble-free laboratory environment
- RS 485 interface and potential-free contact for remote monitoring
- R290 as CFC- and HCFC-free refrigerant
Aside from these core data, the freezer has three drawers and an additional basket, so that the interior can be flexibly equipped. External dimensions of 600 x 615 x 820 mm make it easy to fit into confined laboratory spaces, and thanks to the castors on the rear feet, the appliance can be quickly moved to a new location. With manual defrosting, users retain full control over the condition of the freezer zone, reducing the risk of icing.
Possible areas of application
In many areas of the chemical industry, biotechnology and pharmaceuticals, the safe storage of temperature-sensitive materials is crucial. The freezer described here is suitable for storing enzymes, proteins or vaccines, for example. Medical facilities also benefit from the storage of sensitive blood or tissue samples that require constant cold. Sensitive substances, such as reference standards or organic reagents, can also be stored effortlessly in research institutes. Thanks to the robust design and temperature control system, the stored materials always remain in optimum condition.
Frequently asked questions
How is the laboratory freezer cleaned?
Manual defrosting provides the best opportunity for cleaning. Remove all samples beforehand and wipe the interior surfaces with a mild disinfectant or suitable cleaning agent. Make sure that no residue remains.
What safety precautions are there in the event of a power failure?
The appliance has a MIN/MAX temperature memory and alarm facilities. In the event of a short-term power failure, the insulation keeps the temperature in the interior stable. A separate UPS system or an emergency power system is recommended if sensitive samples need to be protected for longer periods of time.
Is the installation complicated?
The freezer is supplied ready for connection and only needs to be operated via a 1/N/PE ~ 230 V 50 Hz connection. Ensure that it is placed on a firm, level surface and that there is sufficient ventilation around the appliance.
Can additional temperature sensors be used?
Yes, external sensors or additional temperature sensors can be used via the existing usable space feed-throughs to implement further monitoring options or to divide the interior into different temperature zones.
Does the appliance offer remote monitoring?
Connection to a remote alarm system is easily possible via the potential-free contact. In addition, the RS 485 interface enables data exchange with suitable software to record measured values and monitor trends.
Summary
This freezer combines maximum functional safety and convenience in a small space. Thanks to the Ex interior, sensitive and highly flammable samples can be stored without hesitation, while acoustic and visual alarm functions also ensure low-emission and low-risk operation. Its robust design, versatile storage options and maintenance-free technology make it a reliable partner in everyday laboratory work. Anyone looking for a powerful freezer for sensitive substances will find a convincing combination of safety, efficiency and flexibility here.
