ULT Cooling
ULT cooling guarantees long-term storage of biological samples at extremely low temperatures down to −85 °C. These units are specifically designed for molecular biology and life science applications.
Product
ULT Cooling
ULT cooling guarantees long-term storage of biological samples at extremely low temperatures down to −85 °C. These units are specifically designed for molecular biology and life science applications.
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Guide and selection support
ULT cooling is mainly used in laboratories in the fields of molecular biology, biomedicine, and life sciences, where sensitive samples such as DNA, RNA, proteins, or vaccines must be stored at −80 °C to −85 °C. These temperatures minimize the risk of quality loss and degradation.
When selecting ULT cooling, temperature stability, capacity, energy efficiency, as well as features such as alarm systems and temperature recording are essential. Since 2022, DIN 13277 provides technical guidance for procurement.
LabFinder provides objective information and clear criteria to help match the right ULT cooling system to the specific application profile and facilitate device comparison.
Application and Benefits
ULT cooling systems (ultra-low temperature freezers) are used for the long-term storage of temperature-sensitive biological samples, including DNA, RNA, proteins, vaccines, and reactive reagents. Typical temperature ranges are between −80 °C and −85 °C. These ultra-low temperatures are needed to ensure long-term sample stability and to guarantee process continuity in molecular biology and biomedical research laboratories.
Selection Criteria
Key criteria for purchase include target temperature accuracy and consistency, usable internal volume, energy consumption, and user convenience. Additional features such as automatic alarms for temperature fluctuations, redundant safety systems, and integrated temperature logging are also desirable. Compliance with the DIN 13277 standard can support the selection process.
Variants and Device Principles
ULT cooling systems are mainly differentiated by temperature ranges and cooling technologies used. Devices for approximately −80 °C are standard. Freezers with even lower temperatures, such as −150 °C, are considered specialized variants and are viewed separately. Typically, these devices use mechanical refrigeration systems and insulation materials to ensure stable ultra-low temperatures.
Calibration and Maintenance
Regular calibration of temperature displays and controls is important to guarantee proper storage conditions. Maintenance such as seal inspection, refrigeration module cleaning, and alarm function checks should be carried out according to manufacturer specifications to prevent failures.
Limitations of Use
ULT cooling systems are not suitable for samples requiring even lower freezing temperatures (e.g., cryopreservation in liquid nitrogen). Such applications require specialized cooling systems operating below −130 °C. In addition, these freezers are not appropriate for thermally unstable materials with specific requirements at other temperature ranges.
Search Terms and Related Concepts
Relevant search terms include ultra-low temperature freezer, ULT freezer, ULT deep freezer, ultra-low temperature refrigerator, −80°C freezer, molecular biology cooling, biostorage ULT, and laboratory freezer. Synonyms such as ultra-low temperature device and ULT freezer are also used for research and classification.
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Frequently asked questions
How do ULT cooling systems work and which temperatures do they reach?
ULT cooling systems use mechanical refrigeration with insulation to create and maintain stable temperatures between −80 °C and −85 °C. This is required for the long-term, stable storage of biological samples.
Which samples are typically stored in ULT cooling systems?
Laboratories use ULT cooling systems to store temperature-sensitive materials such as DNA, RNA, proteins, vaccines, cell extracts, and reagents that must remain stable at ultra-low temperatures.
What criteria should I use to select a ULT cooling system?
Key selection criteria include temperature stability, storage capacity, energy efficiency, reliability of alarm systems, and compliance with technical standards such as DIN 13277.
How are ULT cooling systems maintained and calibrated?
Temperature regulation should be calibrated regularly. Also, seals should be inspected, refrigeration modules cleaned, and alarm functions tested to avoid failures and temperature fluctuations.
What are the limitations of ULT cooling systems?
ULT cooling systems are not suitable for samples that require temperatures lower than −85 °C, such as for cryopreservation using liquid nitrogen. Specialized cooling systems are required for these applications.
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