The secure ultra-low temperature freezers for the storage of high value samples

Twin Guard -86˚C MDF-DC700VX chest freezer delivers the unsurpassed level of safety and sample security that is critical for valuable biological samples alongside exceptional ease of use and data monitoring.

Two independent refrigeration systems offer Ultimate Sample Protection

The Dual Cooling System offers the highest level of protection through the use of two independent refrigeration systems. If one system unexpectedly fails the other can maintain the freezer in the -70˚C range.

TValuable Sample Storage

Securely store valuable and irreplaceable samples with the upmost confidence that they won’t be lost in the case of compressor failure.

Significantly extended critical time to react to any sudden mechanical failure. Ideal for high security applications.

Timproved Temperature Performance

Twin Guard chest freezers maintain even better temperature stability and uniformity during routine door openings than equivalent upright models as less cold air leaves the freezer while the door is open.

Brand: PHCbi
Categories: Cold Chain Management, Ultra-Low Temperature Freezers


  • Ultimate Sample Protection with the extreme secure Dual Cooling System.
  • Improved Temperature Performance
  • Enhanced Use & Intelligent Security
  • VIP PLUS provides 30% more storage capacity compared to conventionally insulated freezers of the same footprint.
  • Approximately 15% Energy saving ECO mode operation.
  • Intelligent interface Data log function.
  • Class IIa Medical Device certified


  • 575 Litre
  • Filterless Design
  • LCD touch panel
  • USB Port
  • PHCbi designed refrigeration system


External Dimensions (W x D x H) 2300 x 845 x 1070 mm
Internal Dimensions (W x D x H) 1480 x 640 x 756 mm
Volume 715 litres
Net Weight 358 kg
Capacity (2” Boxes in Stainless Steel Racks) 520 (2” boxes)
Capacity (3” Boxes in Stainless Steel Racks)
Cooling Performance -86 °C
Temperature Setting Range -50 to -90 °C
Temperature Control Range -50 to -86 °C
Controller Microprocessor, non-volatile memory
Display LCD Touch Screen
Temperature Sensor Pt-1000
Refrigeration System Independent Dual-Cooling
Compressors 2 x 1100 W
Refrigerant HFC mixed
Insulation Material PUF / VIP Plus
Insulation Thickness 70/135 mm
Exterior Material Painted Steel
Interior Material Stainless Steel
Outer Doors/Lid 1
Outer Door Lock Y
Inner Doors/Lid 3 pieces (Styrofoam)
Max. Load – Per Shelf
Max. Load – Total
Vacuum Release Port
Access Port 1
Access Port Position Back
Access Port Diameter 17
Power Failure V-B-R
High Temperature V-B-R
Low Temperature V-B-R
Filter Filter less design
Door Open V-B
Power Supply Local
Frequency Local
Noise Level 52 dB [A]

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