Haier Biomedical DW-86L486 Ultra Low Temperature Freezer (–86°C)

Overview

The Haier Biomedical DW-86L486 Ultra Low Temperature Freezer is an engineered solution for long-term cryopreservation of sensitive biological specimens—including primary cells, stem cells, tissue samples, plasma, mRNA vaccines, and genomic reagents—under stringent cold-chain requirements. Operating at a stable setpoint range of –40°C to –86°C, the unit achieves uniform internal temperature distribution (<6°C variation across chamber volume) even under ambient conditions up to 32°C, meeting ISO 13485-aligned design principles for medical-grade storage infrastructure. Its dual-compressor architecture, direct-cooling system, and vacuum-insulated panel (VIP) + CFC-free polyurethane foam composite wall construction collectively ensure thermal stability, energy efficiency, and mechanical resilience in high-throughput laboratory and biobanking environments.

Key Features

• Dual independent hermetic reciprocating compressors (800 W each) provide redundancy and sustained cooling capacity, minimizing downtime during maintenance or partial failure.
• Multi-layer door sealing system: One outer foam-insulated door and four independently operable inner foam doors allow selective access without compromising temperature integrity in adjacent compartments—critical for minimizing thermal load during frequent sample retrieval.
• Vacuum Insulation Panel (VIP) integrated with zero-ozone-depletion-potential (ODP) polyurethane foam delivers superior thermal resistance (U-value ≤0.18 W/m²·K), reducing daily energy consumption while maintaining structural rigidity.
• Microprocessor-based digital controller with LED display enables precise setpoint resolution (±0.1°C), real-time monitoring, and password-protected parameter adjustment—supporting audit-ready operational consistency.
• Comprehensive alarm suite includes configurable high/low temperature thresholds, power interruption detection, voltage fluctuation alerts, ambient over-temperature warnings, clogged air filter indicators, sensor fault diagnostics, and low-backup-battery notifications—all with dry-contact remote output for integration into central building management systems (BMS).
• Stainless steel interior shelving (50 kg load capacity per shelf), corrosion-resistant electro-galvanized steel interior panels, and color-coated steel exterior ensure durability, cleanability, and compliance with ISO 14644-1 Class 8 (ISO Class 100,000) cleanroom-compatible handling protocols.

Sample Compatibility & Compliance

The DW-86L486 supports standardized cryogenic storage formats including 2-inch and 3-inch cryovials, racked in compatible aluminum or stainless-steel freezing boxes (optional). Its compartmentalized inner-door layout facilitates segregation of sample types by project, biosafety level, or regulatory category—enabling adherence to Good Laboratory Practice (GLP) and Good Manufacturing Practice (GMP) documentation frameworks. The unit holds China NMPA Class II Medical Device Registration Certification and conforms to UL 61010-1 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and EN 61000-6-3/6-4 (EMC Emission & Immunity Standards). While not pre-certified to FDA 21 CFR Part 11, its logging-capable optional USB data recorder (sold separately) may be validated for electronic record integrity in regulated workflows.

Software & Data Management

The freezer operates autonomously via embedded firmware with no external software dependency. Optional accessories include a USB-enabled temperature data logger (requiring user-provided validation protocol) capable of time-stamped recording at configurable intervals (1–60 min), exportable as CSV files for traceability. All alarm events—including timestamps, severity codes, and recovery status—are retained in non-volatile memory for ≥30 days. Remote alarm contacts (NO/NC) support connection to facility-wide environmental monitoring systems (EMS) compliant with ASTM E2500-13 and ISPE Baseline Guide Vol. 5 standards.

Applications

This ultra-low temperature freezer serves core functions in academic research laboratories, clinical diagnostics centers, contract development and manufacturing organizations (CDMOs), and national biorepositories. Typical use cases include: long-term archiving of induced pluripotent stem cell (iPSC) lines; stabilization of thermolabile monoclonal antibodies and viral vectors; secure storage of residual clinical trial biospecimens; preservation of RNA integrity for next-generation sequencing libraries; and backup cold storage for vaccine distribution hubs operating under WHO PQ or COVAX cold-chain specifications.

FAQ

What is the minimum ambient temperature rating for continuous operation?

The unit is rated for uninterrupted performance in ambient environments between 10°C and 32°C (Climate Class N), per IEC 60068-2-1/2 testing protocols.

Does the freezer support automatic defrost cycles?

No—it employs manual defrost operation to preserve absolute temperature stability and avoid transient warming events that could compromise sample viability.

Can the internal temperature uniformity be verified and documented?

Yes—users may perform IQ/OQ validation using calibrated PT100 probes placed at nine standardized locations (per ISO 14644-3 Annex B guidance), with results recorded against the factory-verified uniformity specification of <6°C.

Is the unit suitable for storing LN₂-dependent samples as primary storage?

No—this is a mechanical ultra-low temperature freezer. Liquid nitrogen (LN₂) backup is available as an optional auxiliary system but does not replace the primary refrigeration function.

Are replacement parts and service support available internationally?

Haier Biomedical maintains authorized service partners across APAC, EMEA, and LATAM regions; technical documentation, spare compressor assemblies, VIP panel kits, and control board modules are stocked under controlled logistics channels.