Product Range

Portable Ultra-Low Temperature Freezers

Three capacities, one Stirling engine platform. Every unit reaches −86 °C on AC mains or 24 V DC mobile power.

DW-86W13L portable ultra-low temperature freezer, 13 litre
DW-86W13L
13 L · 0.46 cu.ft.
  • Capacity 10 × 2″ boxes
  • Temperature −86 to −20 °C
  • Max power 120 W
  • Net weight 15 kg
  • Pull-down 3 h to −80 °C
DW-86W25L portable ultra-low temperature freezer, 25 litre
DW-86W25L
25 L · 0.9 cu.ft.
  • Capacity 20 × 2″ boxes
  • Temperature −86 to −20 °C
  • Max power 120 W
  • Net weight 21 kg
  • Pull-down 4 h to −80 °C
DW-86W45L portable ultra-low temperature freezer, 45 litre
DW-86W45L
45 L · 1.5 cu.ft.
  • Capacity 32 × 2″ boxes
  • Temperature −86 to −20 °C
  • Max power 280 W
  • Net weight 27 kg
  • Pull-down 4 h to −80 °C
Side by side

Specification comparison

Specification DW-86W13L DW-86W25L DW-86W45L
Storage volume13 L (0.46 cu.ft.)25 L (0.9 cu.ft.)45 L (1.5 cu.ft.)
Storage capacity10 × 2″ boxes20 × 2″ boxes32 × 2″ boxes
Temperature range−86 to −20 °C−86 to −20 °C−86 to −20 °C
Uniformity±3 °C at −80 °C±3 °C at −80 °C±3 °C at −80 °C
Maximum power120 W120 W280 W
Supply rating1.2 A @110 V · 0.6 A @220 V · 5.5 A @24 V1.2 A @110 V · 0.6 A @220 V · 5.5 A @24 V2.6 A @110 V · 1.3 A @220 V · 12 A @24 V
Energy use2.4 kWh/day2.4 kWh/day2.8 kWh/day
Pull-down to −80 °C3 hours4 hours4 hours
Interior (L×W×D)280 × 200 × 240 mm300 × 250 × 340 mm367 × 327 × 370 mm
Exterior (L×W×D)599 × 369 × 383 mm601 × 371 × 470 mm789 × 454 × 559 mm
Net weight15 kg (33 lbs)21 kg (46 lbs)27 kg (59 lbs)
Shipping weight17 kg (37.4 lbs)23 kg (50.6 lbs)29 kg (63.8 lbs)
Cooling engineHelium charged free-piston Stirling engine with continuous modulation
RefrigerantR-170 (ethane), 10–12 g — 100 % natural, low GWP
InsulationHigh performance vacuum insulated panels + polyurethane foam
Noise< 55 dB(A) at 1 metre
CertificationCE/EMC, CE/LVD, CQC
Power input100–240 V AC, 50/60 Hz · or 24 V DC from mobile source

Performance figures measured with an empty cabinet at 25 °C ambient unless stated otherwise. Full data available in each model’s datasheet.

−86 °C
Minimum setpoint
2.4 kWh/day
Typical energy use
<55 dB(A)
Noise at 1 metre
24 V DC
Mobile power option
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