Vaccine freezer ULF-25

hospitallaboratoryfor sample storage

Product Overview
Labotemp Portable Ultra Low Temperature Freezer ULF-25 is a high-performance −86°C ULT freezer designed for critical low-temperature storage and transport. Using free-piston Stirling cooling technology, the ULF-25 provides fast pull-down, precise temperature stability and reliable operation in demanding environments. With a compact 25 L capacity and a wide operating range from +18°C to −86°C, it is suited to laboratories, pharmaceutical cold-chain logistics, biological sample storage and field research.

Key Benefits
Engineered for portability and efficiency, the ULF-25 supports both AC and DC power for fixed labs and mobile applications. It maintains temperature uniformity within ±1°C to protect sample integrity and requires minimal maintenance, making it suitable for research institutes, hospitals and life-science facilities seeking compact ultra-low laboratory freezers.

Why Choose Labotemp Ultra Low Temperature Freezer ULF-25?

• Advanced Stirling cooling: high-efficiency, low-vibration cooling with rapid temperature pull-down and reduced energy use.
• Portable & versatile power options: AC and DC support for laboratory, transport and field operations.
• Reliable manufacturer: Labotemp supplies compact, high-accuracy ultra-low lab freezer solutions for professional applications.

Features

• Dual power AC/DC
• Ultra-low temperature down to −86°C
• Portable, compact and lightweight design
• Free-piston Stirling cooling technology
• Stable temperature control with minimal fluctuations
• Low noise operation suitable for lab and field use (<55 dB)
• Suitable for transportation and mobile cold-chain applications

Applications

• Laboratory ultra-low temperature storage
• Biological sample storage and transportation
• Pharmaceutical cold-chain logistics
• Clinical medicine and life-science research
• Industrial extreme-environment simulation testing
• Field research including mobile labs and outdoor applications

Optional Accessories

• Vaccine holder
• Temperature recorder with network capability

Specifications

• Temperature range: +18°C to −86°C
• Volume: 25 L
• Power supply: 100V AC–240V AC, 50/60 Hz; 12V DC–24V DC
• Maximum power / current: 100 W (0.5 A @220 V, 4.6 A @24 V)
• Refrigerant: Helium (He)
• Heat transport system: Gravity-driven thermosiphon
• Cooling engine: Free-piston Stirling cooler
• Temperature control accuracy: Target temperature ±2°C
• Performance (25°C ambient, empty): ~3.5 hours from 25°C to −80°C
• Steady-state power consumption: 75 W
• Insulation: Vacuum insulated panels + polyurethane foam
• Noise level: <55 dB
• Control sensor: RTD (PT100 Class B), precision ±0.3
• Alarm: High/low temperature alarm (setpoint ±10°C)
• Security: Lockable lid
• Defrost method: Manual
• Environmental conditions: Non-corrosive, non-flammable, non-explosive; altitude ≤2000 m
• Interior dimensions (L×W×D): 300×250×300 mm
• Exterior dimensions (L×W×D): 616×392×455 mm
• Net weight: 21 kg
• Shipping dimensions (L×W×D): 710×480×530 mm
• Shipping weight: 26 kg