Beifen Ruili SP-3420A Used Gas Chromatograph
| Origin | Beijing, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (PRC) |
| Model | SP-3420A |
| Instrument Type | Laboratory Gas Chromatograph |
| Application Scope | General-Purpose |
| Oven Temperature Range | Ambient to 450 °C |
| Oven Ramp Rate | 0.1–40 °C/min |
| Oven Cooling Rate | 450 °C to 50 °C in ≤8 min |
| Carrier Gas Flow Range & Control | 0–1200 mL/min (electronic pressure/flow control) |
| 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 |
| Detector Options | TCD, FID, ECD, FPD, TSD |
| Injector Types | Packed Column Injector, Split/Splitless Capillary Injector |
| Control Interface | Microprocessor-based, full-keyboard operation with 32-digit LED display |
| Diagnostic Capability | Real-time self-diagnostic system with fault localization and remediation guidance |
| Method Storage | Up to 4 pre-programmed analytical methods |
| Safety Protections | TCD carrier gas failure protection, overtemperature cutoff, FPD light leakage detection |
| Valve Switching | Automated valve sequencing with dual signal switching capability |
Overview
The Beifen Ruili SP-3420A is a laboratory-grade gas chromatograph engineered for robustness, operational stability, and method reproducibility in routine and research-oriented analytical environments. Based on technology transfer from Varian (USA), the instrument employs classical packed and capillary column separation principles with precise temperature-programmed elution. Its core architecture follows ISO/IEC 17025-aligned design practices for analytical instrumentation—featuring a thermally insulated oven compartment, digitally stabilized detector electronics, and pressure-controlled carrier gas delivery. Designed for general-purpose applications across petroleum refining, environmental monitoring (e.g., VOCs, pesticides), pharmaceutical QC (residual solvents), and industrial hygiene testing, the SP-3420A delivers consistent retention time repeatability (<0.05% RSD) and baseline stability under extended run conditions. As a refurbished unit, each system undergoes full functional validation—including leak integrity verification, temperature calibration traceable to NIST standards, and detector sensitivity verification per ASTM D3612 (for FID) or EPA Method 8081B (for ECD).
Key Features
- Microprocessor-controlled oven with programmable ramp rates (0.1–40 °C/min) and rapid cooling (450 °C → 50 °C in ≤8 minutes), enabling high-throughput method development.
- Dual-mode injector support: fully configurable packed-column inlet and split/splitless capillary inlet—both rated to 450 °C and compatible with standard 0.53 mm, 0.32 mm, and 0.25 mm ID columns.
- Electronic pressure and flow control (EPFC) for carrier gas (N2, He, H2) across 0–1200 mL/min and 0–970 kPa, ensuring retention time precision independent of ambient barometric fluctuations.
- Integrated self-diagnostic firmware continuously monitors heater circuits, detector baselines, valve actuation status, and gas supply integrity—displaying error codes and actionable troubleshooting prompts on the 32-digit LED interface.
- Multi-detector compatibility: TCD (thermal conductivity), FID (flame ionization), ECD (electron capture), FPD (flame photometric), and TSD (thermionic specific detection), each supporting programmable gain, attenuation, and polarity settings.
- On-board method storage for up to four complete analytical protocols—including temperature programs, detector parameters, valve sequences, and data acquisition intervals—accessible via keyboard navigation without external PC dependency.
Sample Compatibility & Compliance
The SP-3420A accommodates volatile and semi-volatile organic compounds (VOCs/SVOCs) with boiling points ranging from −40 °C to 350 °C. It supports standard USP Residual Solvents (Class 1–3), EPA Methods 8021B (halogenated hydrocarbons), 8260D (VOCs in soil/water), and ASTM D3612 (hydrocarbon analysis in transformer oil). All hardware modules comply with IEC 61010-1 safety requirements for laboratory electrical equipment. When operated with validated methods and calibrated standards, the system meets GLP documentation requirements for audit-ready data generation. Optional HT300A autosampler integration enables 21 CFR Part 11–compliant electronic records when paired with compliant chromatography data systems (CDS).
Software & Data Management
While the SP-3420A operates autonomously via its front-panel interface, it provides analog and digital output ports (RS-232, 0–1 V DC) for seamless integration with third-party CDS platforms such as Chromeleon, OpenLab CDS, or Empower. Raw signal outputs support peak integration, retention time locking, and library search (NIST MS library compatible when coupled with mass spectrometry). Audit trails—including method edits, calibration events, and user logins—are maintained externally within the CDS environment. For standalone operation, chromatograms may be recorded via strip-chart recorder or digitized using USB DAQ interfaces with timestamped metadata export (CSV/TXT).
Applications
- Petroleum & Petrochemicals: Hydrocarbon group-type analysis (PIONA), gasoline oxygenates (MTBE, ETBE), and sulfur compound profiling (mercaptans, sulfides).
- Environmental Testing: Quantification of chlorinated pesticides (DDT, lindane), PCB congeners, PAHs in sediment, and BTEX in groundwater per EPA SW-846 protocols.
- Pharmaceuticals: Residual solvent testing (ICH Q3C), excipient purity assessment, and stability-indicating assays for API degradation products.
- Food & Flavor: Essential oil composition (limonene, linalool), fatty acid methyl ester (FAME) profiling, and off-flavor compound screening (geosmin, 2-methylisoborneol).
- Academic & Government Labs: Teaching chromatographic theory, method optimization workshops, and reference material certification studies requiring trace-level detection (sub-ppb FID/ECD sensitivity).
FAQ
Is the SP-3420A supplied with factory calibration certificates?
Yes—each refurbished unit includes a Certificate of Calibration Verification, listing oven temperature accuracy (±0.5 °C at 200 °C), injector linearity (R² ≥ 0.999), and detector response factors against certified reference standards.
Can this instrument be upgraded to support mass spectrometric detection?
The SP-3420A features a standard GC-MS interface port (70 mm diameter transfer line connection) and is compatible with third-party quadrupole MS detectors requiring electron ionization (EI) sources and 1–5 mL/min column flow rates.
What maintenance documentation is provided?
Users receive bilingual (English/Chinese) service manuals, spare parts schematics, diagnostic flowcharts, and a preventive maintenance checklist aligned with ISO/IEC 17025 Clause 5.5.2 requirements.
Does the system support remote monitoring or network connectivity?
Native Ethernet or Wi-Fi is not integrated; however, RS-232-to-Ethernet converters enable remote command execution and real-time signal streaming when deployed with industry-standard SCADA or LabVIEW-based supervisory systems.
Are consumables and columns included in the sale?
No—columns, septa, liners, detector gases, and calibration standards are sold separately. We recommend Agilent J&W or Restek certified capillary columns and helium or hydrogen carrier gas with ≤0.5 ppm O2/H2O impurity specification.
