AUCMA DW-86L937TBS Ultra-Low Temperature Freezer

Overview

The AUCMA DW-86L937TBS Ultra-Low Temperature Freezer is an engineered solution for long-term cryopreservation of sensitive biological specimens—including primary cells, stem cell lines, plasma, tissue samples, and genomic materials—under rigorously controlled thermal conditions. Operating across a validated temperature range of −40 °C to −86 °C, the unit employs dual independent hydrocarbon (R290/R170) refrigeration circuits based on SECOP inverter compressors, ensuring redundancy, energy efficiency, and compliance with global environmental standards (zero ODP, zero GWP). Its structural architecture prioritizes thermal stability: 130 mm-thick CFC-free polyurethane insulation, triple-silicone gasket sealing on both outer and inner doors, and dual pressure-equalization valves eliminate frost accumulation and minimize temperature fluctuation (< ±2 °C uniformity across the chamber). Designed for continuous operation in ISO Class 7–8 laboratory environments (ambient 10–32 °C), the freezer meets foundational requirements for biobank infrastructure per ISBER Best Practices and supports audit readiness for GLP and GMP workflows.

Key Features

• Dual independent hydrocarbon refrigeration systems—each capable of maintaining −75 °C independently, enabling uninterrupted sample integrity during single-circuit maintenance or failure.
• 10.1-inch Android-based touchscreen interface with real-time visualization of operational parameters: compressor status (high/low stage), evaporator fan speed, ambient temperature, grid voltage, door-open duration, and full temperature trend logging.
• Four removable, individually sealed inner doors with dual air-chamber silicone gaskets—reducing cold loss by >40% during partial access versus conventional single-door designs.
• Intelligent EBM permanent-magnet DC condenser fans—dynamically modulated based on ambient thermal load to optimize power consumption without compromising cooling capacity.
• Comprehensive alarm architecture: 12 distinct fault categories (e.g., sensor drift, condenser fouling, prolonged door opening, low battery, voltage deviation) with dual alert modes (audible buzzer + on-screen flashing icon).
• Robust physical design: heavy-duty casters with locking screws, corrosion-resistant electrogalvanized steel interior, and stainless-steel door handles with elastomeric grips for glove-compatible operation.
• Two 25-mm-diameter external access ports—enabling integration with external monitoring systems (e.g., wired PT100 probes, IoT temperature loggers) without compromising thermal integrity.

Sample Compatibility & Compliance

The DW-86L937TBS accommodates standardized cryogenic storage configurations: up to 700 units of 2″ (50.8 mm)冻存盒 (10 × 10 matrix) or 800 units of 8 × 12 format boxes, supporting ≥70,000 × 2 mL vials or ≥80,000 × 1.4 mL tubes. Its chamber geometry (1020 × 725 × 1258 mm) permits flexible rack orientation and vertical airflow optimization. The system complies with IEC 61000-6-3 (EMC emissions) and IEC 61000-6-2 (immunity), and its firmware architecture supports time-stamped, password-protected event logging aligned with FDA 21 CFR Part 11 principles (audit trail, electronic signature readiness). While not certified to UL/EN 61010-1 out-of-box, it is engineered to meet essential safety and performance benchmarks expected in academic core facilities and contract research organizations handling human biospecimens under ISO 20387:2018 (biobanking) and ISO/IEC 17025:2017 (testing laboratories).

Software & Data Management

Embedded firmware enables local data retention for ≥10 years, including setpoint history, actual chamber temperature (recorded every 2 minutes), door-open events, voltage fluctuations, and compressor duty cycles. All logs are exportable via USB 2.0 to CSV or PDF formats—retaining UTC timestamps, operator ID fields, and digital signatures where enabled. Remote monitoring is supported through dual-path connectivity: Wi-Fi (IEEE 802.11 b/g/n) for LAN-based alerts and 4G Cat.4 LTE for off-site SMS/email notifications (configurable per alarm severity level). Optional cloud integration (via AUCMA’s BioVault Connect platform) provides role-based dashboards, multi-unit fleet management, and automated report generation for quality assurance reviews.

Applications

This ultra-low temperature freezer serves critical roles in translational research infrastructure: long-term archiving of clinical trial biospecimens; stabilization of mRNA vaccines and viral vectors prior to formulation; preservation of induced pluripotent stem cell (iPSC) master cell banks; and secure storage of CRISPR-Cas9 reagent libraries. Its rapid cooldown profile (≤6 hours from 25 °C to −80 °C) and minimal thermal recovery time after door openings (200 samples/day. The absence of fluorinated refrigerants further aligns with institutional sustainability mandates and EU F-Gas Regulation (EU No 517/2014) compliance pathways.

FAQ

What is the minimum ambient temperature required for stable operation?

The unit is rated for continuous operation between 10 °C and 32 °C ambient. Below 10 °C, compressor oil viscosity may impair startup reliability; above 32 °C, cooling capacity degrades progressively beyond −75 °C.

Does the system support 21 CFR Part 11-compliant electronic records?

While native audit-trail functionality (time-stamped, immutable logs with user authentication) is implemented, formal 21 CFR Part 11 validation requires site-specific IQ/OQ/PQ protocols and configuration control—supported via AUCMA’s Validation Support Package.

Can the freezer be integrated into a centralized BMS or LabVantage environment?

Yes—via Modbus TCP (optional add-on module) or RESTful API endpoints accessible over the integrated Wi-Fi/4G interface, enabling bidirectional communication with enterprise laboratory information systems.

Is the inner door gasket replaceable as a field-service item?

Yes—inner door dual-chamber silicone gaskets are serialized consumables (part no. DW-TBS-GSKT-02) with documented replacement procedures in the service manual.

What is the warranty coverage and service response time in international markets?

Standard warranty: 24 months parts and labor; extended coverage (up to 60 months) available. Global service network includes certified technicians in >30 countries, with 72-hour on-site response SLA for priority contracts.