Meling Biomedical DW-XL90 -15°C to -30°C Undercounter Biomedical Freezer, 3.18 cu. ft. (90 L)

The Meling Biomedical DW-XL90 is a compact 3.18 cu. ft. (90 L) undercounter biomedical freezer designed for controlled storage of temperature-sensitive materials between -15°C and -30°C. Its front-breathing ventilation design is tailored for the North American market, allowing the freezer to support reliable refrigeration performance in tight undercounter installations where side or rear clearance may be limited. The freezer is suitable for laboratories, pharmacies, clinics, research facilities, and professional healthcare environments requiring space-efficient frozen storage for enzymes, biologics, plasma, medicines, and other temperature-sensitive materials.

Certifications

• UL certified for applicable United States safety requirements
• cUL certified for applicable Canadian safety requirements

The microprocessor controller provides clear digital temperature monitoring through a digital LED display with 0.1°C display accuracy. Direct cooling and manual defrost support controlled low-temperature storage, while R290 hydrocarbon refrigerant, 80 mm insulation, and a TPE double door seal help maintain efficient freezer performance.

Meling Biomedical Brand Heritage

Meling Biomedical is backed by Zhongke Meiling, a specialist life-science and cold-chain manufacturer founded in 2002 through Changhong Meiling and the Chinese Academy of Sciences. The company is recognized as a National High-Tech Enterprise and is documented as the first manufacturer in China to produce ultra-low temperature freezers, pioneering high-efficiency mixed-refrigerant technology for biomedical cold storage. With products and services supplied to more than 140 countries and regions, Meling Biomedical brings the technical foundation of an established Chinese premium cold-storage brand to laboratories, pharmacies, hospitals, biobanks, pharmaceutical facilities, vaccine-storage programs, and research institutions worldwide.

Key Features

• 3.18 cu. ft. (90 L) storage capacity
• Adjustable operating range from -15°C to -30°C
• Undercounter biomedical freezer design
• Front-breathing ventilation tailored for North American undercounter installations
• Built-in design suitable for narrow spaces and limited side clearance
• External height of 812 mm, approximately 32 inches, suitable for many ADA-compliant undercounter environments
• Microprocessor temperature controller
• Digital LED display with 0.1°C display accuracy
• Direct-cooling refrigeration system
• Manual defrost
• R290 hydrocarbon refrigerant
• Daily energy consumption of approximately 0.94 kWh/24h under stated test conditions
• TPE double door seal
• Two adjustable plastic-coated steel wire shelves
• One storage basket
• Sprayed aluminum steel interior
• Pre-coated metal exterior
• 23 mm access port for an independent probe or compatible monitoring equipment
• Remote alarm contact
• RS485 communication interface
• Self-charging backup battery module supporting continued electronic control operation during power interruption
• Alarm system for storage security
• Two leveling feet for stable installation
• Low operating noise of approximately 44.1 dB(A)

Temperature Performance

Manufacturer testing reports:

• Temperature uniformity of approximately 1.3°C
• Pull-down time to -30°C of approximately 1.5 hours
• Daily energy consumption of approximately 0.94 kWh/24h

The brochure states that testing was performed under Energy Star laboratory-grade freezer standards. Actual performance may vary depending on cabinet loading, ambient conditions, installation, ventilation, initial product temperature, door-opening frequency, and power supply conditions.

Front-Breathing Design for North American Installations

Many North American laboratories, pharmacies, and clinical facilities require compact freezers that can fit beneath counters or within built-in casework. The DW-XL90 uses a front-breathing ventilation layout, with airflow entering and exiting through the front ventilation area. This design helps the freezer maintain refrigeration performance when installed in tighter spaces where side or rear ventilation clearance may be restricted.

This feature makes the DW-XL90 especially suitable for space-conscious facilities that need a dedicated biomedical freezer near workstations, medication preparation areas, sample processing benches, or pharmacy storage zones.

Comprehensive Alarm Protection

The integrated alarm system provides notification for conditions including:

• High cabinet temperature
• Low cabinet temperature
• High ambient temperature
• Power failure
• Low backup-battery level
• Data-logger failure
• Temperature-sensor error
• Door-ajar condition
• Data-communication failure

These alarms help personnel identify temperature excursions, electrical interruptions, open-door conditions, and monitoring-system faults promptly.

Local Monitoring Interfaces

The RS485 communication interface and remote alarm contact can connect the freezer to compatible on-site alarm panels, monitoring equipment, or building-management systems without requiring an internet connection.

Privacy-Focused Offline Operation

Internet connectivity, cloud communication, and external manufacturer-server data collection are disabled to support institutional privacy, cybersecurity, and data-governance requirements.

Local RS485 communication and remote alarm-contact functionality remain available for compatible on-site systems.

Designed for Space-Conscious Facilities

The DW-XL90 provides -30°C storage capability in a compact undercounter cabinet measuring 600 x 624 x 812 mm. Its front-breathing ventilation design, low-profile height, adjustable shelves, storage basket, access port, alarm functions, remote alarm contact, and RS485 interface make it suitable for professional facilities requiring dedicated frozen storage without installing a full-height freezer.

The combination of compact dimensions, front ventilation, hydrocarbon refrigerant, low energy consumption, backup battery support, and North American UL/cUL certification makes the DW-XL90 a practical choice for laboratories, pharmacies, clinics, and research facilities where space, safety, and reliable temperature control are important.

Main Specifications

• Model: DW-XL90
• Product type: Undercounter biomedical freezer
• Capacity: 3.18 cu. ft. (90 L)
• Temperature range: -15°C to -30°C
• Recommended ambient temperature: 16°C to 32°C
• Climate class: N
• Controller: Microprocessor
• Display: Digital LED display
• Display accuracy: 0.1°C
• Noise level: 44.1 dB(A)
• Compressor: One
• Cooling method: Direct cooling
• Defrost method: Manual
• Refrigerant: R290
• Insulation thickness: 80 mm
• Exterior material: Pre-coated metal
• Interior material: Sprayed aluminum steel
• Shelves: Two plastic-coated steel wire shelves plus one basket
• Access port: One, 23 mm in diameter
• Mobility and leveling: Two leveling feet
• Interface: Remote alarm contact and RS485
• Alarm functions: High/low temperature, high ambient temperature, power failure, low battery, data logger failure, sensor error, door ajar, and data communication failure
• Internal dimensions, W x D x H: 440 x 465 x 480 mm
• External dimensions, W x D x H: 600 x 624 x 812 mm
• Packaged dimensions, W x D x H: 662 x 682 x 892 mm
• Net weight: 52 kg
• Gross weight: 59 kg
• North American electrical supply: 110 V, 60 Hz
• Rated current: 1.7 A