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Thermo Scientific™ TSX Series Ultra-Low Freezer Packages

Thermo Scientific™ TSX ultra-low freezer packages include two shelves of racks with 2-inch boxes and your choice of factory-installed LN2 back-up, CO2 back-up or chart recorder

Manufacturer: thermo scientific™  TSX400DRAK

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TSX Series ultra-low freezer packages are not available outside the U.S. and Canada.


* Energy calculation: Typical freezer data based on internal testing with freezer set-point at -80°C and ambient temperature at 20°C

Catalog No. TSX400DRAK

 Please call Customer Service at 1-800-234-7437 or send an email to for assistance.

Description & Specifications


Capacity (English) Shelf 165 lb.
Backup Systems CO2 or LN2 (optional)
Capacity (Metric) Shelf 73.4kg
2ml Vial Capacity per Freezer 40,000
Access Security Keylock Standard, Padlock Compatible
Chart Recorder 7-day Ink or Inkless (optional)
Certifications/Compliance UL
Amperage 4/10
Capacity 19.4 cu.ft., 548L
Defrost Manual
Display Touch-Screen LCD
Door Count 1 outer, 2 inner
Dimensions (L x W x H) Exterior 37.8 x 32.4 x 78 in. (96 x 82.2 x 198.1cm)
Dimensions (D x W x H) Interior 27 x 23.1 x 51.2 in. (68.6 x 58.7 x 130cm)
Holds 400 2-inch boxes
Insulation Water-blown foam
Plug Type NEMA 6-15
Shipping Weight (English) 730 lb.
Shelves 3
Shipping Weight (Metric) 332kg
Temperature Range -50°C to -86°C
Doors 1 outer, 2 inner
Door Opening Recovery 17 minutes
Electrical Requirements 208-230V/50-60Hz
Footprint (English) 8.46 sq. ft.
Energy Usage 6.5 kWh/day at -70°C, 7.9 at -80°C
Footprint (Metric) 0.79m2
Includes 8 sliding drawer racks and 200 2-inch boxes with 100-count cell dividers
Inner Doors 2
Operating Modes Standard or High-Performance
On-Board Datalogging Standard
Regulatory Approvals UL
Smart View Compatibility Smart-Vue Compatible
Setpoint Security Standard - Individual user names
Vial to Footprint Ratio (English) 40,000 2mL vials
Vial to Footprint Ratio (Metric) 67,600 1mL vials
Warm up Time -80 C to -50C 267 minutes
Weight (English) 730 lbs.
Weight (Metric) 332 kg
Warranty Warranty varies by country, please contact us for details

Thermo Scientific™ TSX Series ultra-low freezers feature V-drive technology, providing temperature uniformity that adapts to your environment, protecting samples and offering significant energy savings. New TSX packages include two shelves of sliding drawer racks with 2-inche boxes and 100-count cell dividers. Additional packages include factory-installed LN2 or CO2 back-up systems or chart recorders.

  • Two capacities: TSX600 stores up to 600 2-inch boxes while the TSX400 stores up to 400 2-inch boxes 
  • Choice of standard or high-performance modes offering significant energy savings over conventional refrigerant ultra-low freezers*
  • All packages include two shelves of sliding drawer racks with 2-inch boxes and 100-count cell dividers
  • Additional packages include choice of factory-installed LN2 back-up, CO2 back-up or chart recorder
  • Additional energy savings at -70°C setpoint instead of -80°C
  • Outstanding door-opening recovery time
  • Compliant with SNAP, the U.S. Environmental Protection Agency’s Significant New Alternatives Policy
  • Natural refrigerants for lower environmental impact and higher cooling efficiency
  • Water-blown foam insulation, eliminating chemical emissions and reducing the out-gassing common in other foam products
  • Whisper-quiet operation allowing the freezer to be used directly inside the lab
  • Intuitive touch-screen user interface featuring alarm status, doo-opening status, temperature status, environmental conditions and back-up system status