SRI Portable Gas Chromatograph
| Brand | SRI |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | SRI |
| Price Range | USD 14,000 – 42,000 |
Overview
The SRI Portable Gas Chromatograph is a field-deployable analytical instrument engineered for high-fidelity separation and quantitative detection of volatile and semi-volatile organic compounds (VOCs) and permanent gases in real-world operational environments. Built upon robust capillary and packed column gas chromatography principles, it employs precise temperature-programmed oven control, pressure-regulated carrier gas flow management, and modular detector integration to deliver laboratory-grade chromatographic performance outside fixed facilities. Designed specifically for mobile laboratories, environmental monitoring vehicles, oilfield service units, emergency response teams, and industrial process support, the system maintains analytical integrity under variable ambient conditions—vibration, temperature fluctuation, and power intermittency—without compromising retention time stability or peak resolution.
Key Features
- Modular detector architecture supporting up to two simultaneous detectors from a comprehensive suite including TCD, FID, ECD, FPD, NPD, PID, HID, DELCD, TID, and RGD—enabling compound-class-selective detection without hardware replacement.
- Multi-mode injection system accommodating headspace, flash vaporization, split/splitless, thermal desorption, purge-and-trap, static/dynamic headspace, online sampling, bubbling, and TO-14 concentrator interfaces—ensuring compatibility with diverse sample matrices and regulatory protocols.
- Compact, ruggedized chassis with shock-absorbing mounts, sealed electronics enclosure, and wide-temperature-range oven (–20 °C to 450 °C) optimized for vehicular deployment and rapid thermal equilibration.
- Integrated power management supporting 12/24 V DC (vehicle battery), 100–240 V AC, and optional external battery packs for >8-hour continuous operation.
- Pre-calibrated column modules with standardized fittings and retention time locking—reducing method transfer time between instruments and enabling rapid reconfiguration for different analyte groups.
Sample Compatibility & Compliance
The SRI Portable GC accommodates gaseous, liquid, and solid-phase samples via appropriate inlet and conditioning accessories. It supports EPA Methods TO-14A, TO-15, Method 8260D, Method 8021B, ASTM D1945, D1946, D3588, ISO 8573-5, and IEC 60599 (for DGA). Detector configurations meet sensitivity requirements for sub-ppb sulfur speciation (e.g., mercaptans, H₂S, SO₂), ppb-level greenhouse gas quantification (CH₄, CO₂, N₂O), and trace explosive residue screening (TNT, RDX, PETN). All data acquisition and reporting workflows comply with GLP/GMP documentation standards; optional software packages support 21 CFR Part 11-compliant audit trails, electronic signatures, and secure user access controls.
Software & Data Management
Control and analysis are performed via SRI’s proprietary ChromPerfect™ software (Windows-based), offering real-time chromatogram visualization, automated peak integration with retention time alignment, multi-detector signal correlation, and customizable report generation. The platform supports method import/export in AIA (.cdf) format, integrates with LIMS via ODBC, and enables remote diagnostics and firmware updates over Ethernet or cellular modem. Raw data files include full acquisition metadata (oven ramp profile, detector voltages, valve timing, pressure logs), ensuring full traceability for regulatory submissions and inter-laboratory comparison studies.
Applications
- Environmental field screening: BTEX, chlorinated solvents, PCB congeners, and odorant compounds in soil gas and ambient air.
- Energy sector: Dissolved gas analysis (DGA) in transformer oil, natural gas BTU measurement, methane/non-methane hydrocarbon ratio profiling, and flare gas composition verification.
- Industrial hygiene: Real-time workplace exposure assessment per OSHA and NIOSH guidelines using calibrated standard addition and internal standard calibration.
- Petrochemical exploration: Wireline logging support via on-site hydrocarbon fingerprinting and C₁–C₆ speciation during mud logging operations.
- Security & forensics: Rapid identification of improvised explosive precursors, accelerants, and chemical warfare agent degradation products.
- Research & development: Reaction monitoring, catalyst evaluation, and VOC emission profiling from materials and coatings under controlled thermal stress.
FAQ
What regulatory methods does this instrument support?
It natively supports EPA TO-14A, TO-15, 8260D, 8021B; ASTM D1945/D1946; ISO 8573-5; and IEC 60599 for dissolved gas analysis.
Can the system operate unattended for extended periods?
Yes—equipped with autosampler compatibility, programmable sequence control, and battery-backed clock, it supports overnight and multi-day unattended operation with alarm-triggered event logging.
Is column revalidation required after transport?
No—retention time locking (RTL) functionality ensures method reproducibility across instruments and post-transit restarts without recalibration.
How is detector cross-talk minimized in dual-detector configurations?
Independent gas flow paths, electrically isolated detector electronics, and time-synchronized data acquisition eliminate signal interference between co-installed detectors.
What maintenance intervals are recommended for field use?
Routine checks every 100 hours of operation include inlet liner inspection, septum replacement, detector cleaning (FID jet, TCD filament), and carrier gas filter replacement—documented in the included GLP-compliant maintenance log template.
