Eppendorf CO₂ and LN₂ Freezer Back-up Systems – Emergency Protection for ULT Storage

The Eppendorf CO₂ and LN₂ Back-up Systems are essential safety solutions for laboratories relying on ultra-low temperature (ULT) freezers. In the event of power outages or mechanical failure, these systems activate to maintain the internal temperature of your freezer at safe preset levels using liquid CO₂ or liquid nitrogen (LN₂).

Designed for New Brunswick Scientific ULT freezers, these systems ensure that critical biological samples, reagents, or pharmaceuticals remain protected in even the most unexpected circumstances. The units can be factory-installed or retrofitted, and include a freestanding control module, sensor probe, solenoid valve, and necessary transfer lines.

✅ Key Features & Benefits

• Emergency Temperature Stability
  Maintains freezer contents at safe temperatures during power or compressor failure.

• CO₂ or LN₂ Options

  • CO₂ System: Maintains -50 °C to -70 °C

  • LN₂ System: Maintains down to -85 °C

• Complete Monitoring System
  Includes platinum resistance thermometer (probe), door switch, and solenoid valve for precise activation.

• Freestanding Control Unit
  Comes with cables and connectors for integration with ULT freezers.

• Battery-Backed Functionality
  Ensures continued operation during power outages with internal battery back-up.

• Flexible Installation
  Can be pre-installed on new freezers or retrofitted on-site to existing units.

• Non-Interchangeable Use
  Note: CO₂ and LN₂ systems are not interchangeable and must be selected per application.

• Critical for Cold Chain Security
  Used widely in biomedical labs, pharmaceutical research, vaccine storage, and biobanking.

🔧 Technical Overview

✅ Included in Package

• Freestanding control module

• Temperature sensor (probe)

• Door switch

• Solenoid valve

• Transfer lines and connectors

⚠ Note: CO₂ bottles or LN₂ Dewars are not included. Requires external liquid gas source with dip tube or regulated withdrawal port.