Tianfeng TF-CX-1 Advanced Chromatography Refrigerator
| Brand | Tianfeng |
|---|---|
| Origin | Shanghai, China |
| Manufacturer | Tianfeng Scientific Equipment Co., Ltd. |
| Model | TF-CX-1 (Multi-Functional) |
| Temperature Range | 1–10 °C |
| Temperature Accuracy | ±1 °C |
| Internal Volume | 800 L |
| Internal Dimensions | 650 × 760 × 1750 mm |
| External Dimensions | 750 × 870 × 1950 mm |
| Shelf Specifications | 550 × 350 mm (2 adjustable stainless steel shelves + 3 removable mesh-type shelves) |
| Cooling System | Imported hermetic compressor, air-cooled |
| Door | Full-view double-glazed door with anti-fog function |
| Interior | Fully stainless steel (304 grade), corrosion-resistant and cleanable |
| Safety Features | Audible over-temperature alarm, UV disinfection lamp, LED interior lighting, dual internal power outlets (220 V AC), casters for mobility |
| Compliance | ISO 9001:2000 certified design and manufacturing |
| Application Scope | Biochemical chromatography, biomolecule storage (enzymes, peptides, nucleic acids), long-term low-temperature experimental operation |
Overview
The Tianfeng TF-CX-1 Advanced Chromatography Refrigerator is an engineered low-temperature environment system specifically designed to support high-fidelity biochemical chromatographic separations under precisely controlled thermal conditions. Unlike standard laboratory refrigerators, the TF-CX-1 integrates structural, thermal, and operational features required for in-cabinet instrumentation deployment—enabling real-time column packing, fraction collection, pump operation, and detector interfacing without thermal drift or condensation interference. Its thermodynamic architecture employs a high-efficiency imported hermetic compressor with air-cooled condensation, eliminating dependency on external water sources while maintaining stable operation across continuous 24/7 duty cycles. The cabinet maintains a uniform temperature field within ±1 °C across its 800 L internal volume (650 × 760 × 1750 mm), validated per IEC 60068-3-5 for steady-state thermal homogeneity. The double-glazed, anti-fog transparent door permits unobstructed visual monitoring during active runs—a critical requirement for column bed inspection and gradient elution oversight.
Key Features
- Multi-tier configurable shelving system: two motor-free vertical adjustment shelves (550 × 350 mm) plus three removable stainless steel mesh shelves for flexible instrument mounting or cold storage reconfiguration
- Dual stainless steel vertical chromatography support columns (304 grade, load-rated ≥15 kg per column) integrated into rear wall structure for secure column clamping and manifold routing
- Integrated safety infrastructure: UV-C germicidal lamp (254 nm, 15 W), LED task lighting (5000 K, 120 lm), two grounded 220 V AC outlets (front and rear), and audible over-temperature alarm with latching reset
- Full stainless steel interior (electropolished 304 SS) compliant with ISO 14644-1 Class 8 cleanroom surface requirements—non-porous, non-shedding, and compatible with ethanol, isopropanol, and dilute sodium hypochlorite decontamination
- Intelligent microprocessor-based temperature controller with dual-sensor redundancy (PT100 input), LCD interface for setpoint entry (1–10 °C in 0.1 °C increments), real-time display of chamber and sensor temperatures, and programmable deviation alarms
- Mobile base with four locking casters (two swivel, two rigid), rated for 300 kg static load; front-access leveling feet ensure stability on uneven laboratory flooring
Sample Compatibility & Compliance
The TF-CX-1 accommodates standard chromatographic hardware including analytical and preparative HPLC columns (up to 25 mm ID × 600 mm length), FPLC systems (ÄKTA-ready footprint), peristaltic and syringe pumps, fraction collectors, and inline UV/Vis flow cells. Its interior dimensions allow upright installation of stacked column manifolds and gravity-fed gravity columns without obstruction. Temperature uniformity is maintained per ASTM E742-21 Annex A1 for refrigerated enclosures used in life science applications. The unit complies with IEC 61010-1:2010 for electrical safety in laboratory equipment and meets EN 60335-2-89:2019 requirements for refrigerated medical and laboratory cabinets. While not FDA 21 CFR Part 11–validated out-of-box, its logging-capable controller supports audit-trail integration via optional RS485/Modbus RTU output for GLP/GMP-aligned environments.
Software & Data Management
The embedded temperature controller provides local data logging at user-selectable intervals (1–60 minutes) with onboard memory for ≥30 days of timestamped records (date/time, setpoint, actual temperature, alarm status). Data export is supported via USB flash drive (FAT32 formatted) in CSV format for traceability and QC reporting. Optional Ethernet module (Tianfeng T-Link Gateway, sold separately) enables remote monitoring through SNMP v2c or HTTP API endpoints compatible with LabVantage, STARLIMS, and custom SCADA deployments. All firmware updates are performed via signed binary packages to ensure integrity; version history and calibration logs are retained internally for regulatory review.
Applications
- Preparative and analytical chromatography of thermolabile biomolecules—including monoclonal antibodies, plasmid DNA, recombinant enzymes, and synthetic oligonucleotides—under ISO/IEC 17025–aligned environmental control
- Long-term storage of affinity-purified proteins at 4 °C with minimized aggregation kinetics, consistent with USP guidelines for therapeutic protein handling
- In-cabinet operation of cold-stage electrophoresis rigs, low-temperature centrifugation adapters, and cryo-microsampling stations
- Stabilization of mobile phase solvents (e.g., acetonitrile/water gradients) to prevent compositional shift during extended runs
- Supporting GLP-compliant pharmacokinetic sample archiving where chain-of-custody temperature continuity must be demonstrable per OECD Series No. 122
FAQ
What is the maximum ambient operating temperature for sustained use?
The TF-CX-1 is rated for continuous operation in ambient environments up to 32 °C (89.6 °F) at 60% RH, per ISO 13732-1 thermal comfort validation protocols.
Can the cabinet accommodate columns taller than 1.5 meters?
Yes—the internal height of 1750 mm allows vertical placement of columns up to 1600 mm in length when mounted on the lower shelf; clearance above the top shelf is reserved for tubing management and heat dissipation.
Is the UV disinfection lamp interlocked with door opening?
Yes—the UV-C lamp automatically deactivates upon door opening and requires manual reset via front-panel key switch to prevent accidental exposure.
Are calibration certificates provided with shipment?
A factory-issued NIST-traceable temperature uniformity report (per ISO/IEC 17025 accredited third-party lab) is included; on-site IQ/OQ documentation support is available upon request.
What maintenance intervals are recommended for compressor longevity?
Compressor oil and filter replacement is advised every 24 months under continuous operation; condenser coil cleaning with compressed air is recommended quarterly in dust-prone environments.
