Ultra Low Temperature Freezers (-40°C to -86°C)

An ultralow temperature (ULT) freezer is a critical piece of laboratory equipment designed to preserve sensitive biological materials such as cancer cells, stem cells, tissue samples, and other temperature-sensitive specimens. Operating at temperatures as low as -86°C, these freezers provide the stable environment necessary for long-term storage and research continuity.

Why ULT Freezers Are Essential:

• Preservation of Sample Integrity: Maintaining extremely low and stable temperatures ensures that biological samples remain viable, preventing molecular degradation.
• Critical for Research: Many fields, including genomics, regenerative medicine, and pharmaceutical research, rely on ULT freezers to store high-value and irreplaceable materials.
• Prevention of Costly Losses: Failure to store samples properly can lead to the loss of years of research and significant financial investments.

To learn more, explore NuAire's detailed resources:

• Ultralow Freezers Guide eBook
• Ultralow Freezer Buying Guide White Paper

NuAire's ultralow temperature (ULT) freezers are engineered to provide reliable and precise cooling within a temperature range of -86°C to -40°C, with a commonly used set point of -80°C. This broad range ensures the freezers can accommodate a variety of sensitive materials, such as tissue samples, cancer cells, and other biological specimens, while maintaining their integrity over extended storage periods.

Key Features of NuAire ULT Freezers' Temperature Control:

• Consistency and Stability: Advanced cooling systems and insulation minimize temperature fluctuations, critical for maintaining sample viability.
• Customizable Settings: The ability to adjust the set point allows users to optimize storage conditions based on specific research or clinical requirements.
• Rapid Temperature Recovery: Designed to recover quickly to the set point after door openings, ensuring minimal temperature disruptions.

Why Is This Range Important?

The flexibility to maintain such a low and stable temperature ensures that even the most temperature-sensitive samples, such as RNA or certain pharmaceuticals, are preserved in ideal conditions, reducing risks of sample degradation.

For more details about the Blizzard ULT Freezer and its specifications, visit the Blizzard Ultralow Freezer Brochure.

Proper maintenance is crucial for the long-term performance and reliability of your ULT freezer. Key steps to maintain your freezer include:

1. Clean the Condenser Filter Regularly
   • Dust and debris on the condenser filter can reduce cooling efficiency and increase energy consumption.
   • Inspect and clean the filter every 1-3 months depending on the air quality of the surrounding environment.
2. Defrost the Chamber
   • Ice buildup inside the freezer can compromise its cooling efficiency and storage capacity.
   • Periodically defrost the chamber by relocating samples, unplugging the unit, and using room-temperature air to expedite melting.
3. Inspect and Clean Door Gaskets
   • Check gaskets for tears or leaks to ensure a proper seal.
   • Clean the gaskets monthly to prevent frost buildup, which can lead to air leaks and increased workload on the freezer.
4. Perform Calibration Annually
   • Schedule yearly calibration with a qualified technician to ensure temperature readings are accurate and reliable.
   • This involves using an NIST-approved probe to verify the freezer's temperature display.
5. Monitor the Vacuum Relief Port
   • Regularly inspect the vacuum relief port for ice buildup to maintain proper door functionality.
   • Clean as needed to avoid mechanical stress on the freezer.
6. Schedule Preventive Maintenance
   • Regularly review a maintenance checklist that includes filter cleaning, coil inspection, and gasket scraping to ensure consistent performance over the freezer's 12-15 year lifespan.

For more detailed guidelines and a comprehensive checklist, refer to NuAire's Ultralow Freezer Use and Maintenance White Paper.