25L Portable Ultra Low Temperature Freezer -86℃/-123℉

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25L Portable Ultra Low Temperature Freezer -86℃/-123℉

Report portable ultra low temperature freezer uses Stirling Cooling Technology. It's a small portable ULT cold storage. This kind of product focused on laboratory ultra-low temperature storage and transportation, Industrial extreme environment simulation test, Pharmaceutical cold chain transportation, Storage and transportation of biological samples, Cold chain science of life, Clinical medicine, Outdoor camping and Household ULT storage.

Temperature:
-86℃/-123℉;-60℃/-76℉;-45℃/-49℉;4℃/39℉

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Product Description

Product Application

Manuals

Accessories & Packaging

Video

Product Description

JUXIN’s 25L Portable ULT Freezer (DW-4525) gives you dependable, on-the-move cold chain control with the exact specs buyers care about: an every-point settable range of +18°C to −45°C, pull-down from 25°C to −45°C in ~1.5 hours at 25°C ambient, and noise <50 dB for patient-adjacent or vehicle use.

These parameters translate into faster readiness for last-mile vaccine runs, field sampling, and on-site QC—while keeping teams productive in clinics, labs, and mobile units. Pair the quiet profile with true AC/DC flexibility and you can stage, transport, and hand off micro-lots without re-packing or risking excursions, cutting process time and protecting yield across your cold-chain workflow.

DW-4525 — Key Specifications

Item	DW-4525
Capacity	25 L
Temperature Range	+18°C to −45°C
Pull-down	1.5 h (25°C → −45°C, 25°C ambient, empty)
Control / Stability	Target temperature ±1°C
Power	100–240 V AC, 50/60 Hz; 12/24 V DC; Max 100 W; ≈30 W steady-state
Noise	<50 dB
Cooling / Refrigerant	Free-piston Stirling + gravity thermosiphon; Helium (He)
Safety	±10°C warm/cold alarms; lockable lid
Size & Weight	Exterior 616 × 392 × 455 mm; net weight 17.5 kg
Certifications	CE/EMC, CE/LVD, CQC

All Models — Key Features & Specifications

Wide operating temperature with every point setting

Precise temperature control, Inner temperature fluctuation within ±1℃

At the 25℃ ambient temperature. Very High Efficiency

Very flexibility, You can bring it to anywhere you want

Low Vibration and Noise

Use 99.999% Helium refrigerant and R-170 Cooling Conduction liquid

Cooling Chart

Warming Chart

Type	DW-4525	DW-6025	DW-8625	DW-0225
Storage Volume	25L
Electric Power	100V AC to 240V AC；50Hz,60Hz；12V DC to 24V DC
Maximum Power (Current)	100W (0.5A@220V,4.6A@24V)
Cooling Engine	Free-piston Stirling Cooler
Refrigerant	Helium (He)
Heat Transport System	Gravity Driven Thermosiphon
Temperature Range	18℃ to -45℃	18℃ to -60℃	18℃ to -86℃	2℃ to 8℃
Environmental Conditions	Non-corrosive, Non-flammable, Non-explosive, Altitude up to 2000m （Temperature 5℃ to 35℃, maximum relative humidity 80%）

Performance Data	Ambient temperature is 25℃；Empty Cabinet
	Take 1.5 hours from 25℃ to -45℃	Take 2.5 hours from 25℃ to -60℃	Take 3.5 hours from 25℃ to -80℃	Take 0.5 hours from 25℃ to 2℃
Temperature Control Capability	Target Temperature ±1℃	Target Temperature ±1℃	Target Temperature ±2℃	Target Temperature ±1℃
Steady State Energy	Ambient temperature is 25℃
	30W	40W	75W	15W
Insulation	High performance polyurethane foam
Noise	<50dB	<55dB	<55dB	<50dB
Control Sensor	One RTD(PT100 Class B),precision±0.3
Security	Lockable lid
Warm and cold alarms	Setpoint ±10℃
Defrost Method	Manual
Certification	CE/EMC、CE/LVD、CQC
Interior(LxWxD)	300250300mm
Exterior(LxWxD)	616392455mm
Net Weight, Empty	17.5KG
Shipping(LxWxD)	710480530mm
Shipping Weight	21KG

Product Application

Scientific Research

The DW-4525 brings −45 °C setpoints with ±1 °C control into a compact 25 L platform, pulling down from 25 °C to −45 °C in ~1.5 h so teams can pre-condition samples, sensors, and fixtures on schedule. Dual-power (100–240 V AC / 12/24 V DC) and <50 dB acoustics enable quiet, bench-to-vehicle operation without re-packing. Result: reproducible experiments and faster turnaround for low-temperature physics and superconductivity workflows.

Medical

With a +18 °C to −45 °C digital range, ±10 °C warm/cold alarms, and a lockable lid, DW-4525 stabilizes vaccines, biologics, and clinical trial specimens near point-of-care while maintaining chain-of-custody. Its 25 L capacity and 616×392×455 mm footprint fit carts and clinics, and AC/DC flexibility keeps runs continuous from hospital mains to mobile units. Benefit: fewer excursions, stronger compliance, and higher sample integrity in last-mile delivery.

Space Exploration (Ground I&T)

A Stirling-based portable freezer delivering −45 °C, ±1 °C stability and ~1.5 h pull-down supports ground integration & test, pre-cooling payload components, adhesives, and calibration targets before environmental chambers. AC/DC mobility and low noise simplify movement between cleanrooms, labs, and transport. Outcome: higher schedule reliability and reduced temperature-related rework prior to flight.

Industrial

For electronics cooling, polymer/adhesive conditioning, and specialty materials, DW-4525 offers consistent −45 °C staging in 25 L with ≈30 W steady energy use (100 W max), minimizing floor-space and utility impact. Fast ~1.5 h pull-down shortens cycle times, while portable AC/DC operation turns any cart into a low-temp station. The payoff is improved yield, tighter QC, and fewer scrap-driven delays.