Froilabo Polaris Series Stainless Steel Liquid Nitrogen Cryogenic Storage Tank

Overview

The Froilabo Polaris Series is a high-integrity, stainless steel liquid nitrogen (LN₂) cryogenic storage system engineered for long-term, ultra-low-temperature preservation of sensitive biological specimens. Operating exclusively in vapor-phase mode—maintaining sample temperatures consistently below −150 °C without direct immersion in liquid nitrogen—the Polaris platform eliminates cross-contamination risks while delivering exceptional thermal stability and sample integrity. Its monolithic stainless steel vacuum-insulated chamber, combined with advanced multi-layer reflective insulation and optimized neck geometry, achieves industry-leading LN₂ consumption efficiency. Designed for mission-critical biorepositories—including stem cell banks, cord blood facilities, clinical IVF labs, and national biobanks—the Polaris series supports continuous 24/7 operation under ISO 13485–informed quality management frameworks and aligns with core requirements of ISO 20387:2018 (Biobanking) and FDA 21 CFR Part 11 for electronic record integrity.

Key Features

• Vapor-phase storage architecture ensures uniform temperature distribution (−150 °C to −196 °C) across all storage zones, validated per ASTM F2637–22 for cryogenic container thermal performance.
• Integrated CryoLog control system featuring a 7-inch full-color capacitive touchscreen with intuitive icon-driven navigation, real-time LN₂ level monitoring, ambient temperature logging, and predictive refill alerts.
• Automated anti-fog mechanism activates upon lid opening—using controlled warm gas purge—to prevent condensation and maintain optical clarity for rapid, error-free sample identification and retrieval.
• Three-level access control (Administrator / Supervisor / Operator) with role-based permissions, encrypted user authentication, and tamper-evident audit trail compliant with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available).
• Structural design conforms to EN 13445-3 (Unfired Pressure Vessels) and incorporates redundant safety interlocks, overpressure relief valves, and oxygen deficiency monitoring readiness ports.
• Modular internal basket configuration supports standardized 2 mL cryovial racks (e.g., Nunc™, Thermo Scientific™), accommodating up to 94,500 vials in the largest configuration—scalable via optional high-density stacking inserts.

Sample Compatibility & Compliance

The Polaris series maintains strict compatibility with internationally recognized cryogenic specimen containers, including externally threaded 2 mL cryovials, labeled straws, and programmable freezing bags used in hematopoietic stem cell and reproductive tissue banking. All wetted surfaces contact only electropolished 316L stainless steel—passivated per ASTM A967—and are free of leachable organics or endotoxins. The system supports compliance documentation packages for ISO 17025-accredited calibration laboratories and facilitates traceability through integrated barcode/RFID reader expansion ports (optional). It meets foundational prerequisites for CAP accreditation, AABB standards for cord blood banking, and EU Tissue and Cells Directive (2004/23/EC) Annex I requirements.

Software & Data Management

CryoLog firmware (v4.2+) provides local data logging at configurable intervals (1 min–24 h), storing >12 months of temperature, LN₂ level, door-open duration, and alarm history onboard. Export options include CSV and PDF reports compatible with LIMS integration via RS-485 or Ethernet (Modbus TCP). Audit trail records capture user ID, timestamp, action type, and pre-/post-change values—retained for ≥36 months with write-once-read-many (WORM) capability. Optional cloud-enabled remote monitoring (via Froilabo SecureLink™ gateway) enables SMS/email alerts and secure web-based dashboard access—fully compliant with GDPR Article 32 technical safeguards.

Applications

• Long-term archival storage of primary human cells, induced pluripotent stem cells (iPSCs), and genetically modified cell lines under cGMP-compliant conditions.
• High-throughput biobanking operations requiring batch-level traceability, chain-of-custody documentation, and disaster recovery readiness.
• Clinical fertility centers managing sperm, oocyte, and embryo inventories with strict chain-of-identity protocols per ESHRE guidelines.
• Pharmaceutical R&D repositories storing reference standards, viral vectors, and mRNA-LNP formulations requiring thermal homogeneity and minimal freeze-thaw cycling.
• National public health laboratories supporting pandemic response infrastructure with scalable, auditable cold chain continuity.

FAQ

Is the Polaris series suitable for storing infectious or BSL-2+ biological materials?
Yes—its sealed vapor-phase architecture, stainless steel construction, and optional UV-C decontamination module (integrated into lid assembly) support containment integrity and routine surface decontamination per CDC/NIH Biosafety Manual recommendations.
Can CryoLog data be integrated into an existing enterprise LIMS or ELN?
Yes—native Modbus TCP and ASCII serial protocols enable bidirectional communication with major LIMS platforms (e.g., LabVantage, STARLIMS, Thermo Biobank Manager) without proprietary middleware.
What validation support is provided for IQ/OQ/PQ execution?
Froilabo supplies comprehensive DQ/IQ/OQ protocol templates aligned with GAMP 5, plus factory-as-tested calibration certificates traceable to UKAS-accredited standards. On-site PQ execution services are available through certified field application engineers.
Does the system require external ventilation or room oxygen monitoring?
While not mandatory for standard operation, installation in confined spaces (>10 m³ volume) requires integration with building O₂ monitors per EN 14687:2016; Polaris units include dedicated sensor interface terminals for seamless connection.