Jiapeng CX-1 Chromatography Refrigerator

Overview

The Jiapeng CX-1 Chromatography Refrigerator is an engineered environmental control system designed specifically for laboratory-scale chromatographic separations requiring precise, stable, and uniform thermal conditions. Unlike general-purpose refrigerated cabinets, the CX-1 employs a forced-air convection architecture with dynamically balanced airflow distribution—ensuring temperature homogeneity across all shelf levels within ±0.5–2 °C across its full operational range of 0–45 °C. This stability is critical for maintaining column integrity, preserving sample integrity during extended runs (e.g., FPLC, AKTA-based protein purification), and ensuring reproducibility in gradient elution protocols. Its structural design integrates thermally optimized insulation (monolithic rigid polyurethane foam), anti-condensation heated glass doors, and a high-efficiency hermetic compressor—making it suitable for continuous operation in GMP-aligned bioprocessing labs, clinical diagnostics facilities, and academic core facilities performing affinity, ion-exchange, or size-exclusion chromatography.

Key Features

• Microprocessor-based digital temperature controller with dual LED display for setpoint and real-time chamber temperature
• Forced-air circulation system with engineered air ducts and variable-speed fan to ensure ≤1.5 °C vertical/horizontal temperature deviation across all shelves
• Independent over-temperature safety cutoff with visual and audible alarm activation upon deviation beyond user-defined thresholds
• Three-tier heavy-duty adjustable shelving system (30 kg load capacity per shelf), compatible with standard chromatography columns, fraction collectors, and peripheral instrumentation
• Two internally mounted IP44-rated 220 V/10 A waterproof power outlets—enabling direct integration of pumps, UV detectors, fraction collectors, or low-power controllers without external extension cords
• Lockable double-glazed aluminum-framed door with conductive heating film to prevent condensation and maintain optical clarity during low-temperature operation
• Integrated dehumidification circuit to mitigate moisture accumulation—a key factor in preventing microbial growth and electrical corrosion in long-duration purification workflows
• Four-position leveling feet and dual-function casters (swivel + brake) for secure positioning on uneven laboratory flooring

Sample Compatibility & Compliance

The CX-1 supports a wide range of chromatographic hardware configurations—including ÄKTA systems, Bio-Rad NGC platforms, and custom-built purification rigs—without compromising thermal performance. Its interior volume (250 L net, 270 L gross) accommodates stacked columns up to 100 cm in height and ancillary devices such as fraction collectors (e.g., Gilson FC204), UV-Vis flow cells, and buffer reservoirs. The cabinet complies with IEC 61010-1:2010 for laboratory electrical equipment safety and meets EN 60598-1 requirements for internal LED lighting. While not certified for medical device storage under ISO 14644 or USP <797>, its temperature stability profile aligns with common internal SOPs for cold-chain-sensitive reagents used in HPLC mobile phase preparation and column equilibration. Routine calibration verification can be performed using NIST-traceable PT100 probes per ISO/IEC 17025 guidelines.

Software & Data Management

The CX-1 operates as a standalone thermal platform with no embedded software or network interface. Temperature logging requires external validation tools—such as calibrated data loggers (e.g., Omega OM-EL-USB-1) or LabVIEW-integrated DAQ systems—connected via analog output (0–5 V or 4–20 mA, optional add-on). All alarm events (over-temperature, power loss, door-open duration >60 s) trigger passive relay outputs for integration into building management systems (BMS) or centralized lab monitoring networks. For GLP/GMP environments, users are advised to implement periodic manual calibration records and maintain audit trails per FDA 21 CFR Part 11 when paired with compliant electronic record systems.

Applications

• Protein purification workflows using FPLC or HPLC systems operating at ambient-to-chilled temperatures (e.g., His-tag elution at 4 °C)
• Storage and operation of temperature-sensitive affinity resins (e.g., Protein A, Ni-NTA) to minimize ligand leaching
• Buffer conditioning and degassing prior to LC-MS analysis where thermal consistency affects baseline noise
• Long-duration gel filtration runs requiring column temperature stabilization to reduce band broadening
• Preparative chromatography in academic core facilities where multi-user access demands robust physical security and thermal reliability
• QC/QA testing of monoclonal antibody intermediates under controlled thermal stress conditions

FAQ

What is the minimum and maximum operating temperature of the CX-1?
The CX-1 maintains stable operation from 0 °C to 45 °C, with optimal thermal uniformity achieved between 4 °C and 25 °C.
Can the CX-1 accommodate a full-size AKTA Pure 25 system with integrated fraction collector?
Yes—the internal dimensions (530 × 450 × 1130 mm) allow side-by-side placement of an AKTA Pure 25 main unit and a 20-tube fraction collector on separate shelves; column height clearance supports 90 cm packed columns.
Is the cabinet suitable for use in ISO Class 5 cleanrooms?
While the CX-1 itself is not cleanroom-rated, its sealed insulation, non-shedding interior surfaces, and absence of exposed moving parts make it compatible with cleanroom-adjacent staging areas when installed with appropriate HEPA-filtered air supply.
Does the unit support remote temperature monitoring?
No native Ethernet or Wi-Fi interface is included; however, analog output signals and dry-contact alarm relays enable third-party integration with SCADA or LabArchives-compatible monitoring platforms.
How often should temperature calibration be performed?
Per ISO/IEC 17025 recommendations, initial verification should occur at installation; subsequent checks are advised quarterly—or before each critical purification campaign—using traceable reference probes.