Ultra-low temperature refrigerator is an indispensable cryogenic storage device in the life science and bio-pharmaceutical fields. It can be used to store cells, tissues, test samples, vaccines, active enzymes, strains, plasmids, viruses, bacteria, blood red blood cells, white blood cells, The high-value-added sample of the genebank is stored in ultra-low temperature; it can also cooperate with equipment such as carbon dioxide incubator and stability test chamber to serve the fields of drug screening optimization and biopharmaceutical research and development.

First, the performance of the refrigeration system determines the overall performance. Memmert ULF ultra-low temperature refrigerator uses single compressor technology, with 100% HCFC-free CFC-free environmentally friendly refrigerant, has achieved excellent performance, including cooling rate and insulation effect and other parameters. Both are superior to industry standards, and the time required to reduce from room temperature to -86 ° C is around 200 minutes.

Second, the distributed evaporator design takes into account the layers of the separator, so that the temperature uniformity <1 ° C, temperature uniformity ≤ 2 ° C, these parameters have far exceeded the industry standards, national standards and international standards,

Third, the security alarm is also an important part of the ultra-low temperature refrigerator. GB/T9237-2017 stipulates that “the alarm system should provide both audible and visual alarms.” ULF series ultra-low temperature refrigerators provide nearly ten alarm settings including high and low temperature alarms, sensor fault alarms, power failure alarms, etc., and are no longer just warning alarms. The code, but the complete display of the alarm information content, intuitive and efficient. A remote alarm interface is also available.

The standard also states that “when the alarm system is installed, its power supply should not be supplied to other refrigeration systems or other equipment that causes refrigerant leakage hazards.” The alarm system is equipped with UPS power supply, which can be continuously alarmed for 72 hours during power failure and continuously. Display and record all parameter data.

Fourth, the data management is complete. It is equipped with a mechanical door lock. The control panel is protected by a password and password. In addition to this, there is a data recording system that can view data through the control panel and can trace back ten days of data curves. It also has a large-capacity data storage system that can continuously record at least Twenty years of data; data can be exported.

5. ULF110/400/600 adopts overhead single compressor technology, low energy consumption, high cooling efficiency, low noise and easy maintenance.

The continuous and stable operation of the ultra-low temperature refrigerator can effectively reduce the negative situation that seriously affects the progress of the experiment, such as sample degradation, bacterial inactivation, and abnormal tissue recovery. At the same time, the stability of the environmental conditions should be paid attention to during the use. In order to ensure the normal operation of the condenser, the enclosure should have an unobstructed space of not less than 30cm, and the ventilation is good, away from the heat source.

references:

GB/T 9237—2017 “Safety and Environmental Requirements for Refrigeration Systems and Heat Pumps”

GB/T 20154-2014 "Cryogenic Storage Box"

ISO 5149-3:2014 Refrigerating systems and heat pumps -- Safety and environmental requirements -- Part 3: Installation site