Acrichi AGS-H25 Full-Heated Automatic Gas Sampler
| Brand | Acrichi |
|---|---|
| Origin | Beijing, China |
| Model | Acrichi AGS-H25 |
| Instrument Type | Multifunctional Gas Autosampler |
| Max Sample Capacity | 25 positions |
| Minimum Injection Volume | 0.5 mL (customizable) |
| Quantitative Loop Volume | 1 mL (customizable) |
| Positioning Accuracy | <0.3 mm |
| Motion Control | Precision valve-switching actuation |
| Needle Cleaning Method | Reverse purge |
| Repeated Injection Capability | Unlimited |
| Valve & Tubing Temperature Range | Ambient to 220 °C ±0.1 °C |
| Sample Port Temperature Range | Ambient to 150 °C ±1 °C |
| Reproducibility | <1.5% RSD (at 100 ppm methane) |
| Power Consumption | 1500 W |
| Electrical Supply | AC 220 V ±10%, 50 Hz |
| Dimensions (W×D×H) | 725 × 500 × 680 mm |
| Weight | ~55 kg |
Overview
The Acrichi AGS-H25 Full-Heated Automatic Gas Sampler is a precision-engineered chromatographic accessory designed for reliable, high-reproducibility gas-phase sample introduction into GC or GC-MS systems. It operates on a thermally integrated sampling principle: all critical fluidic components—including the sampling valve, quantitative loop, transfer lines, and injection port—are maintained within independently controlled, stable temperature zones. This architecture eliminates condensation, minimizes adsorption losses, and ensures consistent vapor-phase composition delivery—particularly essential for volatile organic compounds (VOCs), permanent gases (e.g., H₂, O₂, N₂, CO, CH₄), and thermally labile analytes. Unlike ambient-temperature samplers, the AGS-H25’s full-heating capability supports direct analysis of samples stored in gas-tight syringes or inert polymer bags (e.g., Tedlar® or FlexFoil®) without cold-trapping or pre-heating steps. Its modular design allows seamless integration into existing laboratory workflows via TTL/RS-232/RS-485 interfaces, supporting both standalone operation and synchronized triggering with chromatographic data systems.
Key Features
- Multi-zone active heating: Valve body and capillary lines heated to 220 °C ±0.1 °C; sample port heated to 150 °C ±1 °C—ensuring complete thermal management across the entire flow path.
- 25-position sample carousel with sub-millimeter positioning accuracy (<0.3 mm), enabling precise, repeatable access to vials, gas-tight syringes, or pre-conditioned sampling bags.
- Customizable quantitative loop volume (standard 1 mL, optional down to 0.5 mL) fabricated from high-purity, passivated stainless steel or fused silica-lined tubing to minimize surface activity.
- Reverse-purge needle cleaning mechanism using carrier gas or inert purge gas, reducing carryover between injections and extending maintenance intervals.
- Integrated thermal insulation and inert wetted materials (e.g., SilcoNert®-treated surfaces, PFA/PEEK fittings) to prevent corrosion, adsorption, and cross-contamination in aggressive matrices (e.g., H₂S, Cl₂, NH₃).
- Onboard microcontroller with embedded real-time OS, supporting unattended 24/7 operation, automated event logging, and fault diagnostics with timestamped status records.
Sample Compatibility & Compliance
The AGS-H25 accommodates diverse gas sampling formats: standard 10–20 mL gas-tight glass syringes, heat-stable polymer sampling bags (rated to 150 °C), and pressurized canisters via compatible inlet adapters. Its pressure-tolerant sampling pump handles ambient to +100 kPa(g) inlet conditions, making it suitable for stack monitoring, biogas analysis, and fermentation headspace profiling. From a regulatory standpoint, the system supports GLP-compliant operation through audit-trail-enabled software logging, user-access controls, and electronic signature-ready data export. All temperature setpoints, injection events, and system errors are time-stamped and stored locally—fully traceable per FDA 21 CFR Part 11 requirements when paired with validated PC software. Hardware construction complies with IEC 61010-1 for laboratory electrical safety, and thermal stability meets ISO/IEC 17025 calibration traceability expectations for gas volumetric measurement.
Software & Data Management
The AGS-H25 ships with two complementary software layers: an embedded web-based interface accessible via Ethernet for real-time status monitoring, manual override, and firmware updates; and a Windows-native desktop application for method development, sequence programming, and data review. The desktop software enables creation of multi-step sequences—including variable loop fill times, programmable purge durations, and conditional start triggers (e.g., external TTL signal from GC oven). All operational parameters, run logs, and instrument health metrics are stored in structured CSV/SQLite databases with automatic daily backup. Experimental metadata—including sample ID, operator name, environmental conditions, and calibration history—is bound to each analytical result. Export functions support direct Excel (.xlsx) generation with customizable templates aligned to ISO 10618 or ASTM D1945 reporting formats. Remote access via secure HTTPS or VPN is supported without third-party cloud dependencies.
Applications
- Environmental air quality monitoring: quantification of VOCs, BTEX, and odorants in ambient, indoor, or landfill gas samples.
- Petrochemical process control: online analysis of refinery off-gases, FCC unit streams, and hydrogen purity verification.
- Biogas and anaerobic digestion research: longitudinal tracking of CH₄, CO₂, H₂S, and NH₃ concentrations under varying feedstock conditions.
- Pharmaceutical residual solvent testing: compliant sampling of headspace vapors from lyophilized products per USP .
- Food packaging headspace analysis: O₂, CO₂, and ethanol migration studies in modified-atmosphere packaging (MAP) validation.
- Calibration gas preparation and dilution: automated gravimetric or pressure-based blending using certified reference standards.
FAQ
Does the AGS-H25 support integration with third-party GC data systems?
Yes—it provides native support for Agilent OpenLab, Thermo Chromeleon, Shimadzu GCsolution, and Waters Empower via hardware-triggered start signals and ASCII-based status polling over RS-232/RS-485.
Can the quantitative loop be replaced in the field?
Yes—the loop module is tool-free removable and interchangeable; spare loops (0.5 mL, 1 mL, 2 mL) are available as certified replacement kits with individual calibration certificates.
Is the heating system validated for temperature uniformity across all 25 positions?
Temperature mapping reports (per ASTM E2251) are included with each unit, documenting axial/radial gradients across the carousel and loop manifold at 100 °C and 200 °C setpoints.
What maintenance intervals are recommended for the sampling pump and purge valves?
Under typical lab use (≤100 injections/day), the corrosion-resistant diaphragm pump requires inspection every 6 months; solenoid valves are rated for ≥5 million cycles and do not require scheduled replacement.
How is data integrity ensured during extended unattended runs?
All logs are written to dual non-volatile memory banks with cyclic redundancy checks (CRC-32); power-loss recovery preserves the last executed step and resumes sequencing upon reboot without data corruption.
