Portable Ultra Low Temperature (ULT) Freezer -86°C ULF-25

Labotemp Portable Ultra Low Temperature Freezer

Portable Ultra Low Temperature (ULT) Freezer -86°C ULF-25

Name: Portable Ultra Low Temperature (ULT) Freezer -86°C ULF-25
Brand: Labotemp
SKU: ULF-25
Price: 4393.00 USD
Availability: InStock
Rating: 4.9 (643 reviews)

Labotemp Portable Ultra Low Temperature Freezer -86°C ULF-25 is a high-performance Stirling Freezer engineered for the safe storage and transportation of temperature-sensitive biological samples, vaccines, pharmaceuticals, reagents, and research materials. Featuring a 25 L storage capacity, an adjustable temperature range from +25°C to -86°C, and ±1°C temperature stability, it delivers dependable ultra-low temperature preservation for laboratories, clinical facilities, pharmaceutical cold chains, and field research. High-performance vacuum insulated panels combined with polyurethane foam insulation minimize heat loss, while the PT100 temperature sensor ensures precise monitoring and stable storage conditions. Designed for maximum flexibility, the ULF-25 operates on both 100–240 V AC and 12/24 V DC power, making it ideal for mobile laboratories, emergency response, and cold chain transportation.

Advanced Stirling Cooling Technology

The ULF-25 utilizes a free-piston Stirling Freezer system that cools by cyclically compressing and expanding helium gas within a sealed mechanism, eliminating the need for conventional compressor technology. With fewer moving components, Stirling cooling offers lower vibration, quieter operation, greater reliability, and reduced maintenance than traditional compressor-based freezers. The system rapidly reaches -86°C, maintains stable temperatures within ±1°C, and consumes an average of only 70 W during steady operation, providing excellent energy efficiency without compromising performance. Using environmentally friendly R-170 (Ethane) refrigerant, intelligent temperature monitoring, and integrated high/low temperature alarms, the ULF-25 delivers sustainable, long-term ultra-low temperature storage for demanding laboratory and cold chain applications.

Why Choose Labotemp Portable Ultra Low Temperature Freezer ULF-25?

✓ Advanced Stirling Freezer: Compressor-free cooling for quiet, low-maintenance, and energy-efficient operation.
✓ Portable Cold Chain Solution: 25 L capacity with AC/DC power compatibility for laboratory, transport, and field applications.
✓ Reliable & Eco-Friendly Design: Vacuum insulation, R-170 refrigerant, PT100 sensor, and intelligent alarms ensure safe, efficient, and dependable performance.

$4393

Datasheet User Manual

Temperature Range : +18°C to –86°C Temperature Range	+18°C to –86°C
Volume : 25 L Volume	25 L
Power Supply : 100V AC–240V AC, 50/60Hz; 12V DC–24V DC Power Supply	100V AC–240V AC, 50/60Hz; 12V DC–24V DC
Maximum Power / Current : 100 W (0.5A @220V, 4.6A @24V) Maximum Power / Current	100 W (0.5A @220V, 4.6A @24V)
Refrigerant : Helium (He) Refrigerant	Helium (He)
Heat Transport System : Gravity-driven thermosiphon Heat Transport System	Gravity-driven thermosiphon
Cooling Engine : Free Piston Stirling Cooler Cooling Engine	Free Piston Stirling Cooler
Temperature Control Accuracy : Target temperature ±2°C Temperature Control Accuracy	Target temperature ±2°C
Performance (25°C ambient, empty) : ~3.5 hours from 25°C to –80°C Performance (25°C ambient, empty)	~3.5 hours from 25°C to –80°C
Steady-State Power Consumption : 75 W Steady-State Power Consumption	75 W
Insulation : High-performance vacuum insulated panels + polyurethane foam Insulation	High-performance vacuum insulated panels + polyurethane foam
Noise Level : <55 dB Noise Level	<55 dB
Control Sensor : RTD (PT100 Class B), precision ±0.3 Control Sensor	RTD (PT100 Class B), precision ±0.3
Alarm : High/low temperature alarm (setpoint ±10°C) Alarm	High/low temperature alarm (setpoint ±10°C)
Security : Lockable lid Security	Lockable lid
Defrost Method : Manual Defrost Method	Manual
Environmental Conditions : Non-corrosive, non-flammable, non-explosive; altitude ≤2000 m Environmental Conditions	Non-corrosive, non-flammable, non-explosive; altitude ≤2000 m
Interior Dimensions (L×W×D) : 300×250×300 mm Interior Dimensions (L×W×D)	300×250×300 mm
Exterior Dimensions (L×W×D) : 616×392×455 mm Exterior Dimensions (L×W×D)	616×392×455 mm
Net Weight : 21 kg Net Weight	21 kg
Shipping Dimensions (L×W×D) : 710×480×530 mm Shipping Dimensions (L×W×D)	710×480×530 mm
Shipping Weight : 26 kg Shipping Weight	26 kg

Dual Power AC/DC: Dual Power AC/DC
Advanced Stirling Cooling Technology- Free-piston Stirling engine delivers ultra-low temperatures with low vibration, quiet operation, and minimal maintenance. ➤ Advanced Stirling Cooling Technology- Free-piston Stirling engine delivers ultra-low temperatures with low vibration, quiet operation, and minimal maintenance.
Ultra-Low Temperature Performance- Adjustable temperature control down to -86°C with ±1°C stability for reliable preservation of sensitive biological samples. ➤ Ultra-Low Temperature Performance- Adjustable temperature control down to -86°C with ±1°C stability for reliable preservation of sensitive biological samples.
High-Efficiency Thermal Insulation- Vacuum insulated panels and polyurethane foam reduce heat transfer, improving energy efficiency and temperature retention. ➤ High-Efficiency Thermal Insulation- Vacuum insulated panels and polyurethane foam reduce heat transfer, improving energy efficiency and temperature retention.
Dual Power Compatibility- Supports 100–240V AC and 12/24V DC operation for laboratory use, mobile applications, and cold chain transportation. ➤ Dual Power Compatibility- Supports 100–240V AC and 12/24V DC operation for laboratory use, mobile applications, and cold chain transportation.
Environmentally Friendly Refrigeration- Utilizes R-170 (Ethane) refrigerant and helium working gas for efficient cooling with reduced environmental impact. ➤ Environmentally Friendly Refrigeration- Utilizes R-170 (Ethane) refrigerant and helium working gas for efficient cooling with reduced environmental impact.
Compact & Portable Design- Lightweight 25 L configuration enables convenient transport for field research, emergency response, and mobile laboratory applications. ➤ Compact & Portable Design- Lightweight 25 L configuration enables convenient transport for field research, emergency response, and mobile laboratory applications.
Intelligent Temperature Monitoring- High-accuracy PT100 Class A sensor provides precise temperature control and continuous monitoring. ➤ Intelligent Temperature Monitoring- High-accuracy PT100 Class A sensor provides precise temperature control and continuous monitoring.
Rapid Cooling Performance- Quickly reaches -86°C while maintaining stable operating conditions for temperature-sensitive materials. ➤ Rapid Cooling Performance- Quickly reaches -86°C while maintaining stable operating conditions for temperature-sensitive materials.
Comprehensive Safety Protection- Equipped with high/low temperature alarms and intelligent monitoring to safeguard valuable samples during storage and transport. ➤ Comprehensive Safety Protection- Equipped with high/low temperature alarms and intelligent monitoring to safeguard valuable samples during storage and transport.
Low Noise & Energy Efficient- Operates below 55 dB(A) with low average power consumption, making it suitable for continuous laboratory operation. ➤ Low Noise & Energy Efficient- Operates below 55 dB(A) with low average power consumption, making it suitable for continuous laboratory operation.

Clinical & Hospital Laboratories: Provides reliable ultra-low temperature storage for biological specimens, diagnostic samples, plasma, serum, and other temperature-sensitive clinical materials Clinical & Hospital Laboratories
Provides reliable ultra-low temperature storage for biological specimens, diagnostic samples, plasma, serum, and other temperature-sensitive clinical materials
Pharmaceutical & Biotechnology: Maintains the integrity of vaccines, pharmaceutical products, reagents, enzymes, and biologics during laboratory storage and cold chain transportation Pharmaceutical & Biotechnology
Maintains the integrity of vaccines, pharmaceutical products, reagents, enzymes, and biologics during laboratory storage and cold chain transportation
Research & Academic Institutions: Supports long-term preservation of DNA, RNA, proteins, cell cultures, microbial strains, and valuable research samples for life science and biomedical studies Research & Academic Institutions
Supports long-term preservation of DNA, RNA, proteins, cell cultures, microbial strains, and valuable research samples for life science and biomedical studies
Mobile Laboratories & Field Research: Portable AC/DC operation makes it ideal for on-site sample collection, environmental monitoring, veterinary diagnostics, and remote scientific expeditions Mobile Laboratories & Field Research
Portable AC/DC operation makes it ideal for on-site sample collection, environmental monitoring, veterinary diagnostics, and remote scientific expeditions
Cold Chain Logistics: Ensures secure transport and temporary storage of temperature-sensitive materials during distribution, emergency response, and vaccine delivery programs Cold Chain Logistics
Ensures secure transport and temporary storage of temperature-sensitive materials during distribution, emergency response, and vaccine delivery programs
Public Health & Emergency Response: Suitable for rapid deployment in outbreak investigations, disaster relief operations, and mobile healthcare units requiring dependable ultra-low temperature preservation Public Health & Emergency Response
Suitable for rapid deployment in outbreak investigations, disaster relief operations, and mobile healthcare units requiring dependable ultra-low temperature preservation