Overview
Field-proven capacity, still portable
The DW-86W25L is the workhorse of the range: 20 standard 2″ boxes, 120 W maximum draw and a 21 kg empty weight. It is the format most often chosen for clinical point-of-care delivery, vaccine transport and mobile collection teams.
- 25 L (0.9 cu.ft.) — 20 standard 2″ boxes
- −86 °C to −20 °C, adjustable in 1 °C increments
- Reaches −80 °C in 4 hours from a 25 °C ambient
- Only 2.4 kWh/day at −80 °C (≈100 W average)
- Recovers to −80 °C in 20 minutes after a 1-minute lid opening
- 100–240 V AC auto-voltage, or 24 V DC mobile operation
Specifications
Technical data
Application, rating & electrical data
| Application | Storage of general (non-flammable) laboratory materials |
|---|---|
| Storage volume | 25 litres (0.9 cu.ft.) |
| Storage capacity | 20 standard 2″ boxes |
| Temperature range | −86 °C to −20 °C @ 25 °C ambient; uniformity ±3 °C at −80 °C top to bottom; adjustable in 1 °C increments |
| Electric power | 100 V to 240 V AC at either 50 or 60 Hz, or 24 V DC from a mobile source |
| Power cord options | Multiple options available — consult your sales representative |
| Maximum power | 120 watts |
| Auto-voltage capability | 100 V to 240 V AC, 50 or 60 Hz |
| Electric supply rating | 1.2 A @ 110 V AC · 0.6 A @ 220 V AC · 5.5 A @ 24 V DC |
| Certification / agency listing | CE/EMC, CE/LVD, CQC |
| Noise | < 55 dB(A) at 1 metre |
| Indoor / outdoor use | Indoor use only |
| Environmental conditions | Non-corrosive, non-flammable, non-explosive; indoor; altitude up to 2,000 m; 5 °C to 40 °C (41 °F to 104 °F); max. relative humidity 80 % up to 31 °C, decreasing linearly to 50 % at 40 °C |
Controller & monitoring
| Controller type | Microprocessor controls |
|---|---|
| Security | Lockable lid |
| Warm and cold alarms | Setpoint ± 10 °C |
| Control sensor | One RTD (PT100 Class A) |
| Dry contacts | Optional |
| Internet connectivity | Optional wireless temperature monitoring and logging |
Refrigeration system
| Cooling engine | Helium charged free-piston Stirling engine with continuous modulation |
|---|---|
| Heat transport system | Gravity driven thermosiphon |
| Refrigerant | R-170 (ethane), 10–12 grams |
| Evaporator | Cold wall (inner liner) |
| Heat rejection | Finned heat exchanger with forced air cooling. Air inlet: front side and right front of unit. Air outlet: left front side of unit |
| Defrost method | Manual |
Performance data
| Steady state energy use | 2.4 kWh/day (average power 100 W) at −80 °C, empty cabinet, 25 °C ambient |
|---|---|
| Pull-down from 25 °C ambient | 4 hours to −80 °C (empty cabinet) |
| Recovery after 1 minute lid opening | 20 minutes to −80 °C (empty cabinet) |
| Warm-up profile | 30 minutes to −60 °C; 70 minutes to −40 °C (empty cabinet) |
| Heat dissipation | 403 BTU/h (load to HVAC), empty cabinet |
Dimensions & construction
| Interior (L × W × D) | 300 × 250 × 340 mm (11.8 × 9.9 × 13.4 in.) |
|---|---|
| Exterior (L × W × D) | 601 × 371 × 470 mm (23.7 × 14.6 × 18.5 in.) |
| Net weight, empty | 21 kg (46 lbs), nominal |
| Shipping (L × W × D) | 630 × 430 × 530 mm (24.8 × 16.9 × 20.9 in.) |
| Shipping weight | 23 kg (50.6 lbs) |
| Insulation | High performance vacuum insulated panels and polyurethane foam |
| Options | Power adapter, sub-lid, instruction manual |
In the box
What is included
- DW-86W25L portable ultra-low temperature freezer
- AC power cord (region specified at order)
- Optional 24 V DC mobile power adapter
- Sub-lid for improved temperature retention
- Instruction manual
Custom baskets, racking, branding and monitoring packages are available — see our Custom & OEM service.