AUCMA DW-60W238 Ultra-Low Temperature Freezer

Overview

The AUCMA DW-60W238 Ultra-Low Temperature Freezer is an engineered solution for long-term cryogenic storage of biologics, clinical specimens, and temperature-sensitive materials requiring stable thermal environments between –30 °C and –60 °C. Designed according to ISO 13485-aligned manufacturing practices and validated for compliance with Good Laboratory Practice (GLP) and Good Manufacturing Practice (GMP) operational frameworks, this unit employs a dual-stage cascade refrigeration architecture—comprising separate high- and low-temperature circuits—to achieve rapid pull-down, minimal temperature fluctuation (< ±2.5 °C uniformity across chamber), and consistent thermal stability under variable ambient loads (10–32 °C). Its structural integrity supports continuous operation in ISO Class 7 cleanroom-adjacent environments and meets IEC 61010-1 safety requirements for laboratory equipment. The freezer is widely deployed in blood banks, vaccine distribution centers, biobanks, and pharmaceutical R&D laboratories where preservation integrity directly correlates with sample viability and regulatory traceability.

Key Features

• Microprocessor-controlled digital temperature management system with dual Pt100 sensors for real-time internal monitoring and adaptive PID regulation
• Imported high-efficiency cascade compressors and EBM precision DC fans enabling <120 min pull-down from 25 °C to –60 °C and sustained operation at full load
• 120 mm-thick high-density CFC-free polyurethane insulation with vacuum-degassed foaming process, reducing heat ingress by >40% versus standard 80 mm panels
• Triple-layer door seal design with magnetic gasket and mechanical latch ensures air-tight closure and minimizes frost accumulation during frequent access
• Comprehensive alarm architecture: configurable high/low temperature thresholds, sensor failure detection, door-open warning (≥30 sec), and power interruption logging
• Remote alarm interface (dry contact relay output) compatible with building management systems (BMS) and centralized lab monitoring platforms
• Integrated voltage compensation circuitry maintaining stable operation across ±15% input voltage variation (187–253 V)
• Lockable control panel with 4-digit password protection to prevent unauthorized parameter modification per FDA 21 CFR Part 11 audit trail prerequisites

Sample Compatibility & Compliance

The DW-60W238 accommodates standard cryogenic storage configurations including 100 mm × 100 mm冻存盒 (Nunc™-compatible), aluminum or stainless-steel rack systems, and stacked specimen trays. Its uniform temperature field supports storage of red blood cells (RBCs), peripheral blood mononuclear cells (PBMCs), primary tissue explants, viral vectors, mRNA-lipid nanoparticles, and lyophilized biologics per USP , ASTM F2697-21, and WHO Technical Report Series No. 999 Annex 6 guidelines. All internal surfaces are electropolished stainless steel (AISI 304), non-porous and compliant with ISO 15223-1 labeling standards. The unit undergoes factory calibration verification against NIST-traceable reference thermometers and includes a Certificate of Conformance documenting chamber mapping data (9-point validation at three vertical levels).

Software & Data Management

While the base model operates via embedded firmware without external software dependency, optional integration with AUCMA’s A-LogTemp™ data logger enables continuous temperature recording at user-defined intervals (1–60 min), encrypted SD card storage (up to 1 year @ 5-min logging), and CSV export for audit submission. The logger complies with 21 CFR Part 11 requirements for electronic records—including user authentication, audit trail generation, and immutable event timestamps. Optional Ethernet/Wi-Fi modules support SNMP-based network monitoring and TLS 1.2-secured API access for integration into LabVantage, STARLIMS, or custom LIMS deployments.

Applications

• Clinical specimen banking: Long-term archiving of hematopoietic stem cells, cord blood units, and ovarian tissue prior to transplantation
• Vaccine cold chain integrity: Storage of mRNA, adenoviral, and subunit vaccines requiring uninterrupted –40 °C to –60 °C conditions
• Biopharmaceutical development: Stability testing of monoclonal antibodies, fusion proteins, and ADC intermediates under accelerated degradation protocols
• Marine biopreservation: Cryo-storage of deep-sea microbial isolates and enzymatically active marine collagen scaffolds
• Material science: Low-temperature characterization of superconducting ceramics, ferroelectric thin films, and quantum dot dispersions
• Regulatory submissions: Generation of temperature history dossiers for IND/IMPD filings and EU Annex 15 qualification documentation

FAQ

What is the recommended ambient operating environment for the DW-60W238?
The unit is rated for continuous operation in rooms maintained between 10 °C and 32 °C with relative humidity ≤70% non-condensing. Ventilation clearance of ≥100 mm on all sides and 200 mm above is required for optimal condenser airflow.
Does the freezer support IQ/OQ/PQ validation documentation?
Yes—AUCMA provides a Validation Support Package including URS template, FAT/SAT checklists, installation qualification (IQ) protocol, operational qualification (OQ) test scripts, and PQ guidance aligned with ISO 14644-1 and PDA TR#1 technical reports.
Can the temperature logging interval be adjusted post-installation?
Yes—the optional A-LogTemp™ module allows real-time configuration of sampling frequency, alarm thresholds, and data retention duration via front-panel menu or secure web interface.
Is the unit suitable for storing flammable solvents or compressed gases?
No—this is a general-purpose ultra-low temperature freezer not certified for hazardous location use (e.g., UL 60079, ATEX). Storage of flammable or reactive substances requires explosion-proof certified equipment.
What maintenance schedule is recommended for optimal performance?
Condenser coil cleaning every 3 months (or more frequently in dusty environments), annual verification of door seal compression force and sensor calibration traceability, and biannual inspection of refrigerant charge integrity using manifold gauge set and leak detector per ASHRAE Guideline 3-2021.