AZENTA A220 High-Performance Gas-Phase Liquid Nitrogen Storage System

Overview

The AZENTA A220 High-Performance Gas-Phase Liquid Nitrogen Storage System is an engineered solution for long-term, ultra-low-temperature biobanking of sensitive biological specimens—including stem cells, primary tissues, PBMCs, oocytes, embryos, and genomic samples. Unlike conventional liquid-phase storage, the A220 maintains samples exclusively in the vapor phase above liquid nitrogen, ensuring consistent temperatures ≤ −185 °C at the sample zone while eliminating direct contact with cryogenic liquid—thereby preventing cross-contamination, sample displacement, and thermal shock during retrieval. Its design adheres to core principles of passive vacuum insulation, controlled thermal gradient management, and fail-safe cryogen logistics. The system integrates a high-vacuum double-walled stainless steel dewar architecture with optimized neck geometry and thermal bypass pathways, enabling stable thermal performance even under extended lid-open conditions (≤ −150 °C after 48 h per factory validation). It is intended for use in GLP-compliant laboratories, clinical biorepositories, and cell therapy manufacturing facilities requiring traceable, auditable, and ISO/IEC 17025-aligned cold chain integrity.

Key Features

• Gas-phase storage mode only—eliminates immersion risk and ensures uniform thermal exposure across all sample positions
• Vacuum-insulated stainless steel construction with >99.5% vacuum coverage, delivering industry-leading thermal retention and low LN₂ consumption
• Integrated microprocessor-based monitoring system with dual Pt100 sensors (top/bottom), ±1 °C accuracy, and configurable alarm thresholds
• Multi-solenoid auto-fill system with thermal gas purge pre-injection—prevents warm nitrogen ingress and minimizes temperature perturbation during refills
• HMI touchscreen interface with 10-year onboard data logging (temperature, level, events), USB export capability, and real-time trend visualization
• Top-mounted ergonomic work platform with foldable step, multifunctional handle (for stability, PPE storage, and sample transfer), and anti-fog LED illumination
• UL / CSA 61010-1 and LVD 2014/35/EU certified; includes backup battery (≥72 h runtime post-power loss) and remote alarm relay output
• Modular rack compatibility—supports both vertical and horizontal 2.0 mL tube configurations; up to 106,000 vials in larger models (A1000)

Sample Compatibility & Compliance

The A220 accommodates standard cryovial formats (0.5–5.0 mL), cryostraws, and specimen bags within validated rack systems. All internal materials comply with USP Class VI biocompatibility requirements and are non-pyrogenic. The system supports 21 CFR Part 11–compliant audit trails when integrated with AZENTA’s optional LIMS interface module (sold separately). Temperature uniformity is verified per ASTM F2627–22 (Standard Practice for Performance Testing of Cryogenic Vessels), with ≤±3 °C deviation across the usable storage volume under steady-state gas-phase operation. For GMP environments, the unit meets Annex 1 (2022) cold chain documentation expectations for continuous monitoring, alarm response logging, and calibration traceability to NIST standards.

Software & Data Management

The embedded controller runs firmware version 3.2+ with secure local storage of time-stamped operational records—including lid-open duration, fill cycles, alarm triggers (high/low temp, low level, sensor fault), and daily LN₂ consumption metrics. Data export is supported via FAT32-formatted USB drives (no cloud dependency). Optional Ethernet or RS-485 connectivity enables integration into facility-wide environmental monitoring systems (EMS) compliant with ISO 13485 and FDA guidance on electronic records. All logged parameters are timestamped with UTC synchronization and include operator ID fields where paired with access control modules.

Applications

• Clinical-grade biobanking for autologous/allogeneic cell therapies (e.g., CAR-T, MSCs)
• Longitudinal cohort studies requiring decades-long nucleic acid stability
• IVF laboratories maintaining viable oocyte and embryo inventories
• Pharmaceutical R&D biorepositories supporting IND-enabling toxicology and PK/PD studies
• Government and academic core facilities operating multi-user shared cryo-infrastructures

FAQ

Does the A220 support both gas-phase and liquid-phase storage?
No—the A220 is engineered exclusively for gas-phase operation to ensure biosafety and thermal consistency. Liquid-phase functionality is available only in dedicated AZENTA liquid-immersion models (e.g., A220-LI).
What is the maximum allowable lid-open duration without compromising sample integrity?
Per internal validation per ASTM F2627–22, the A220 maintains ≤−150 °C in the upper sample zone for ≥48 hours after full lid removal under ambient lab conditions (22 °C, 50% RH).
Is remote monitoring supported out-of-the-box?
Yes—the system includes a dry-contact alarm relay port and optional Ethernet module for SNMP or Modbus TCP integration with central EMS platforms.
How often does the vacuum insulation require maintenance or re-evacuation?
The high-integrity vacuum jacket is sealed for life and requires no scheduled maintenance; vacuum decay rate is <1×10⁻⁹ mbar·L/s, verified during factory leak testing per ISO 10425.
Can the system be calibrated onsite by the user?
Temperature sensors are factory-calibrated and field-verifiable using NIST-traceable dry-block calibrators; full recalibration requires return to AZENTA-certified service centers.