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Ultra-Low Temperature Freezer LTF Twin

LTF Twin Freezer

LTF Twin Ultra-low temperature freezers with double cooling technology offer a maximum of safety for your high-quality samples. In addition to the exceptional ease of use and data monitoring, the Dual Cooling System provides the highest level of protection by using two independent cooling systems.

Should a cooling system fail unexpectedly, the other can maintain the freezer´s temperature uniformly in the range of -70°C.
The freezers are managed and monitored by an integrated microprocessor controller with a comprehensive alarm system and diagnostic functions.

Certified as a Class IIa medical device (93/42/EWG and 2007/47/EU).

-86°C extremely safe

Part Number: LTF00327


  • Temperature sensitive samples
  • Samples needing to retain viability such as stem cells, engineered tissue, vaccines, cancer cells ...
  • Samples from longitudinal studies
  • Medical research and clinical studies
  • Valuable pharmaceutical products
  • Pathogenic samples within high security laboratories


  • Extremely safe dual cooling system
  • Double insulated doors
  • 2 doors, can be opened separately
  • Optionally available with several interior doors
  • Heated rubber seal of the doors (smooth running)
  • Intelligent interface
  • Low power consumption with constant temperature (2.4°C)
  • No heat development
  • Very silent
  • Vacuum panels as insulation (7.5 cm)
  • Failure rate below 1%
  • Up to 5 years warranty
  • Readout of temperature curves with USB interface (Excell/CSV file)     


  • Dual Cooling System
  • EZlatch (easy door opening)
  • LCD Touch screen
  • USB Port
  • Eco Mode Operation
  • 729 litres / -86°C (other models on request)

Uniform and Stable Temperatures

Non-uniform interior temperatures can lead to a loss in sample integrity. Twin freezers with uniform, stable temperatures and quick recovery times provide the best protection for your samples, ensuring reliable preservation while guarding against degradation.


Dual Cooling System

The Dual Cooling System offers the highest level of security through the use of two independent refrigeration systems.
Should one system unexpectedly fail the other can maintain the freezer at the -70 ̊C range.

External Dimensions (W x D x H)1030 x 882 x 1993 mm
Interior Dimensions (W x D x H)870 x 600 x 1400 mm
Volume729 liters
Net Weight328 kg
Capacity (Aluminium Racks 2” Boxes)576 (2” boxes)
Capacity (Stainless Steel Racks 2” Boxes)576 (2” boxes)
Cooling Performance-86 °C
Temperature Setting Range-50 up to -90 °C
Temperature Control Range-50 up to -86 °C
ControllerMicroprocessor, non-volatile memory
DisplayLCD Touch Screen
Temperature SensorPt-1000
Refrigeration SystemIndependent Dual-Cooling
Compressors2 x 1100 W
RefrigerantHFC mixed
Insulation MaterialPUF / VIP Plus
Insulation Thickness80 mm
Exterior MaterialPainted Steel
Interior MaterialPainted Steel
Outer Doors/Lid1
Outer Door LockYes
Inner Doors/Lid2
Shelves3 (stainless steel)
Max. Load - Per Shelf50 kg
Max. Load - Total515 kg
Vacuum Release Port2 (1 automatic, 1 manual)
Access Port3
Access Port PositionBack x 1, Bottom x 2
Access Port Diameter17 mm
Casters4 (2 leveling feet)
Power FailureV-B-R*
High TemperatureV-B-R*
Low TemperatureV-B-R*
FilterFilterless desing
Door OpenV-B*
Power Supply / Frequency230 V / 50 Hz single phase
Noise Level<52 dB [A]

*V = optical alarm, B = acoustic alarm, R = remote alarm


  • Small Inner Door Kit: Set of 5
  • Small Inner Door Kit: Set of 4
  • Liquid CO2 back-up
  • Various temperature recorders:
    Circular type, chart paper, ink pen, continuous strip type, recorder housing

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