Tianfeng TF-CX-1 Chromatography Refrigerator (Standard Powder-Coated Model)

Overview

The Tianfeng TF-CX-1 Chromatography Refrigerator is an engineered cold storage solution specifically designed to meet the stringent thermal and operational requirements of biomolecular separation workflows. Unlike standard laboratory refrigerators, this unit integrates precision temperature control with structural adaptability for on-board chromatographic instrumentation—enabling real-time column operation, fraction collection, and detector integration within a thermally stable environment. Its refrigeration architecture employs a high-efficiency imported compressor and optimized air-distribution ducting to maintain uniform airflow across the entire chamber volume, minimizing thermal gradients that could compromise elution profile reproducibility. Operating continuously at 1–10 °C with ±1 °C stability, the TF-CX-1 complies with foundational environmental conditions specified in ISO 15190:2020 (Laboratory safety) and supports GLP-aligned experimental execution where sample integrity, instrument stability, and ambient consistency are critical.

Key Features

• Stable low-temperature operation from 1 to 10 °C with microprocessor-based PID temperature regulation and real-time LCD display for both setpoint and actual chamber temperature
• Full stainless-steel interior construction—corrosion-resistant, non-porous, and compliant with cleaning validation protocols under ISO 14644 cleanroom-compatible practices
• Dual-layer insulated glass door with anti-fog coating ensures uninterrupted visual monitoring without condensation interference during extended runs
• Two vertically adjustable open-frame shelves (550 × 350 mm) and two fixed stainless-steel support columns accommodate modular chromatography systems including peristaltic pumps, fraction collectors, and UV detectors
• Integrated UV germicidal lamp (254 nm) and LED interior lighting facilitate sterile handling and low-light-sensitive sample manipulation
• Air-cooled condenser system eliminates dependency on external water supply or drainage infrastructure—ideal for labs lacking chilled-water loops
• Equipped with dual internal AC outlets (220 V, 10 A), casters with locking brakes, and audible over-temperature alarm with deviation threshold alerting

Sample Compatibility & Compliance

The TF-CX-1 is routinely deployed in academic and industrial life science laboratories conducting affinity, ion-exchange, size-exclusion, and hydrophobic interaction chromatography of proteins, nucleic acids, peptides, and enzyme complexes. Its 800 L internal volume and 1750 mm height allow vertical column mounting up to 1 m tall, while uniform air circulation—achieved via dedicated duct design—prevents localized hot/cold spots that may induce band broadening or retention time drift. The unit satisfies baseline thermal performance criteria referenced in USP Analytical Instrument Qualification and aligns with Annex 11 (Computerized Systems) prerequisites when used with validated data acquisition software. Though not intrinsically 21 CFR Part 11 compliant, its hardware architecture supports integration with third-party audit-trail-enabled chromatography data systems (CDS).

Software & Data Management

The embedded temperature controller records setpoint history and real-time chamber readings but does not store raw data logs internally. For regulatory traceability, Tianfeng recommends interfacing the analog output signal (0–5 V or 4–20 mA) with external data loggers compliant with FDA 21 CFR Part 11 requirements. Optional RS485 Modbus RTU communication enables centralized HVAC monitoring in multi-unit lab environments. All firmware updates are performed manually via USB port; no cloud connectivity or remote access functionality is implemented—ensuring network isolation consistent with institutional cybersecurity policies.

Applications

• On-cabinet operation of FPLC and AKTA systems requiring ambient temperature stabilization during purification of monoclonal antibodies and recombinant proteins
• Long-duration gel filtration runs where column bed temperature directly influences resolution of macromolecular complexes
• Cold-chain preservation of unstable intermediates—including phosphorylated peptides and RNA-binding proteins—prior to downstream mass spectrometry analysis
• Simultaneous storage of calibration standards, mobile phase solvents, and pre-chilled reagents alongside active chromatographic separation
• Adaptation as a low-temperature incubation chamber for cold-active enzyme assays or cryo-precipitation protocols

FAQ

What is the maximum allowable load weight per shelf?
Each adjustable shelf is rated for 30 kg distributed load; total cabinet static capacity is 120 kg.
Can the unit be installed in a non-air-conditioned room?
Ambient operating range is 10–32 °C; installation in uncontrolled environments may reduce compressor lifespan and increase energy consumption.
Is the UV disinfection lamp ozone-free?
Yes—the 254 nm low-pressure mercury lamp emits no ozone and requires no ventilation interlock.
Does the cabinet support external temperature probe calibration verification?
Yes—a dedicated PT100 sensor input port allows third-party NIST-traceable probe integration for IQ/OQ documentation.
Are replacement shelves and columns available as spare parts?
All structural components—including stainless-steel shelves, support columns, and door gaskets—are cataloged and stocked for global shipment.