HF-901A Gas Chromatograph by HUIFEN Instrument
| Brand | HUIFEN Instrument |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | HF-901A |
| Instrument Type | Laboratory Gas Chromatograph |
| Application Scope | General-Purpose |
| Oven Temperature Range | Ambient + 5 °C to 450 °C |
| Ramp Rate | 0.1–80 °C/min |
| Cool-Down Rate | 350 °C → 50 °C in <5 min |
| Carrier Gas Flow Range & Control | 0–1200 mL/min |
| Carrier Gas Pressure Range & Control | 0–970 kPa |
| Injector Maximum Operating Temperature | 450 °C |
| Injector Pressure Setting Range | 0–970 kPa |
| Injector Total Flow Setting Range | 0–1200 mL/min |
| Temperature Control Zones | 8 independent zones with over-temperature protection |
| Display | 7-inch industrial color LCD touchscreen |
| Language Support | English & Chinese |
| Programmed Temperature Ramping | Up to 16 steps (expandable) |
| Maximum Run Time | 999.99 min |
| Injection Modes | Split/splitless capillary, packed column, valve injection, auto liquid/gas sampling |
| Detector Capacity | Up to 4 detectors simultaneously |
| Supported Detectors | FID, TCD, ECD, FPD, NPD, PDHID, PED |
| FID Detection Limit | ≤3.0×10⁻¹² g/s (n-hexadecane in iso-octane) |
| FID Linear Dynamic Range | ≥10⁷ |
| TCD Sensitivity | ≥10,000 mV·mL/mg (benzene/toluene) |
| TCD Linear Dynamic Range | ≥10⁵ |
| FPD Detection Limits | S ≤2×10⁻¹¹ g/s, P ≤1×10⁻¹² g/s (methyl parathion) |
| ECD Detection Limit | ≤1.0×10⁻¹⁴ g/mL (γ-HCH) |
| NPD Detection Limits | N ≤1.0×10⁻¹² g/s (azobenzene), P ≤1.0×10⁻¹² g/s (malathion) |
Overview
The HF-901A Gas Chromatograph by HUIFEN Instrument is a high-performance, general-purpose laboratory gas chromatography system engineered for precision separation and quantitative analysis of volatile and semi-volatile organic compounds. Based on classical gas–solid and gas–liquid partition chromatography principles, the instrument utilizes controlled carrier gas flow through temperature-programmable capillary or packed columns to achieve reproducible retention time alignment and compound resolution. Its modular architecture supports up to four independently operated detectors—FID, TCD, ECD, FPD, NPD, PDHID, and PED—enabling multi-analyte detection across environmental, petrochemical, pharmaceutical, food safety, and forensic applications. Designed for robust daily operation in regulated environments, the HF-901A complies with foundational instrumentation requirements aligned with ISO/IEC 17025 method validation frameworks and supports data integrity practices consistent with GLP and GMP workflows.
Key Features
- Eight independent temperature-controlled zones—including oven, dual injectors, and up to four detector compartments—with real-time over-temperature cutoff and 0.1 °C setpoint resolution.
- Advanced column oven with intelligent rear-door airflow modulation: achieves rapid cooling (350 °C → 50 °C in under 5 minutes) and stable near-ambient operation via continuously adjustable intake/exhaust fans.
- Modular detector interface supporting hot-swap installation and configuration; all detector control electronics are housed in dedicated, shielded modules with digital I/O for synchronized timing and signal acquisition.
- Multi-mode injection system compatible with split/splitless capillary, packed-column, gas-tight valve, headspace, thermal desorption, and automated liquid/gas sampling—each configurable with programmable purge, bake-out, and septum blowout functions.
- Integrated self-diagnostic firmware with fault logging, power-failure memory retention, anti-electromagnetic-interference circuitry, and automatic screen-saver activation during idle periods.
- 7-inch industrial-grade color LCD touchscreen with dual-language (English/Chinese) GUI, intuitive workflow navigation, and embedded method storage for >1000 user-defined methods.
Sample Compatibility & Compliance
The HF-901A accommodates a broad range of sample matrices—including aqueous extracts, organic solvents, gaseous standards, polymer headspaces, and derivatized biological fluids—when paired with appropriate column chemistries (e.g., DB-5ms, HP-INNOWAX, or PLOT Al₂O₃). Its injector pressure and flow control (0–970 kPa / 0–1200 mL/min) ensure compatibility with both narrow-bore capillaries and wide-bore packed columns. All internal gas pathways undergo full chemical passivation to minimize adsorption and catalytic degradation—critical for trace-level organophosphorus, halogenated, or sulfur-containing analytes. While not pre-certified to specific regulatory standards, the system’s hardware design, audit-ready event logging, and deterministic timing architecture facilitate compliance with ASTM D3606, EPA Method 8021B, USP , and ISO 17025 validation protocols. Optional 21 CFR Part 11-compliant software modules are available for electronic signature and audit trail implementation.
Software & Data Management
Data acquisition and processing are performed via HUIFEN’s GC-Link™ workstation software, a Windows-based platform supporting real-time chromatogram display, peak integration using iterative tangent-skim algorithms, calibration curve generation (linear, quadratic, weighted), and customizable report templates compliant with LIMS export formats (CSV, XML, PDF/A). Raw data files retain full acquisition metadata—including detector voltage traces, temperature profiles, valve event timestamps, and gas flow logs—ensuring full traceability. The software supports method transfer between instruments, batch sequence automation, and remote monitoring via secure Ethernet or USB connection. For laboratories requiring formal data governance, optional extensions provide electronic signatures, user role-based access control, and immutable audit trails meeting ALCOA+ principles.
Applications
- Environmental analysis: VOCs in air/water per EPA TO-17 and Method 8260D; pesticides in soil/plant tissue per EN 15662.
- Petrochemical QA/QC: Hydrocarbon group-type analysis (PIONA), benzene/toluene/xylenes (BTX), and sulfur speciation in fuels.
- Pharmaceutical residual solvent testing per ICH Q3C guidelines using headspace-GC/FID.
- Food flavor profiling and contaminant screening (e.g., mycotoxins, plasticizers, packaging migrants) via GC-MS coupling-ready interfaces.
- Forensic toxicology: Volatile substance identification (ethanol, acetone, chloroform) and drug metabolite screening using ECD/NPD selectivity.
FAQ
Is the HF-901A compliant with 21 CFR Part 11?
The base instrument does not include built-in Part 11 functionality; however, optional software packages with electronic signatures, audit trails, and role-based permissions are available upon request.
Can I upgrade detector configurations post-purchase?
Yes—the modular detector bay supports field-installation of additional detector units without hardware modification or service engineer intervention.
What column dimensions and phases are supported?
All standard capillary columns (0.1–0.53 mm ID, 10–60 m length) and packed columns (2–4 mm ID, up to 4 m) are supported; compatibility depends on selected inlet and detector configuration.
Does the system support unattended overnight operation?
Yes—programmable run sequences, automatic shutdown routines, and power-loss recovery enable fully autonomous operation for extended batch analyses.
Is technical documentation available in English only?
Full English-language user manuals, maintenance guides, and application notes are provided; bilingual (EN/CN) versions are included with shipment.
