Beifen Sanpu AHS-20A Plus 20-Position Fully Automated Static Headspace Sampler
| Brand | Beifen Sanpu |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Instrument Type | Static Headspace Sampler |
| Automation Level | Fully Automatic |
| Sample Vial Heating Range | Ambient to 200 °C (1 °C increments) |
| Valve & Transfer Line Temperature Range | 40–220 °C (±1 °C accuracy) |
| Quantitative Loop Volume | 1 mL |
| Sample Capacity | 20 positions |
| Vial Size Compatibility | 10 mL or 20 mL |
Overview
The Beifen Sanpu AHS-20A Plus is a fully automated static headspace sampler engineered for precise, reproducible extraction and introduction of volatile organic compounds (VOCs) from solid and liquid matrices into gas chromatography (GC) systems. Based on the equilibrium partitioning principle—where analytes distribute between a condensed phase (sample) and its overlying vapor phase—the instrument thermally equilibrates sealed vials under controlled temperature and pressure conditions, followed by pressurized transfer of the headspace gas into a GC via a high-inertness six-port valve and heated transfer line. Designed specifically for regulatory-compliant residual solvent analysis in food contact materials (FCMs), pharmaceutical packaging, polymers, and environmental solids, it eliminates manual syringe-based sampling variability and enables unattended batch processing of up to 20 samples per run. Its architecture supports ISO/IEC 17025-aligned laboratory workflows and integrates seamlessly with FID, ECD, TCD, and mass spectrometric detectors.
Key Features
- 20-position carousel with automatic vial recognition and collision avoidance logic—detects empty positions and skips them without operator intervention
- Independent, PID-controlled heating zones for sample vials (ambient–200 °C), injection valve (40–220 °C), and transfer line (40–220 °C), all with ±0.5 °C stability and 0.5% temperature accuracy
- Pressurized headspace sampling using inert N₂ or He carrier gas (0–0.25 MPa adjustable); eliminates baseline drift associated with vacuum or syringe draw methods
- 1 mL fixed-volume quantitative loop constructed from de-activated fused-silica capillary tubing—minimizes adsorption, carryover, and cross-contamination
- Full thermal insulation of the six-port valve and loop within the heated oven compartment—ensures zero cold spots and preserves analyte integrity during transfer
- Seven-inch graphical LCD interface with animated workflow guidance; supports both front-panel and USB-connected PC configuration (Windows-compatible)
- Programmable timing parameters: equilibration (0–30 min), pressurization (0–999 s), sampling (0–999 s), and bake-out/clean (0–30 min); time resolution down to 1 ms
- Comprehensive self-diagnostic suite—including motor position verification, heater fault detection, vial tray alignment check, and communication handshake validation
- Optional EPC (Electronic Pressure Control) module for enhanced carrier gas regulation and method robustness (factory-installed or field-upgradable)
Sample Compatibility & Compliance
The AHS-20A Plus accommodates standard 10 mL and 20 mL crimp-top headspace vials (custom sizes available upon request), supporting direct analysis of films, laminates, pouches, foils, and molded plastic components after mechanical size reduction. It meets critical performance criteria referenced in multiple international standards, including ASTM D7265 (residual solvents in packaging), ISO 11843-7 (detection capability for VOCs), and Chinese national standards GB/T 10004–2008 (packaging film solvent residues) and SN/T 4068–2014 (regenerated cellulose coatings). The system is validated for use in GLP environments and supports 21 CFR Part 11-compliant data audit trails when paired with compliant GC data systems (e.g., OpenLab CDS, Chromeleon). Its low RSD (<1.0% at 100 ppm ethanol in water) satisfies repeatability requirements outlined in USP and EP 2.4.24 for residual solvent quantification.
Software & Data Management
All operational parameters—including temperature setpoints, timing sequences, pressure profiles, and sequence files—are configurable via intuitive USB-linked software or locally through the onboard interface. Method templates can be saved, recalled, and exported for inter-laboratory transfer. The instrument triggers GC start commands synchronously via TTL or relay output, ensuring precise timing coordination. Raw event logs (including timestamps, error codes, and heater status) are stored internally and exportable as CSV for QA review. When integrated with chromatography data systems supporting ASTM E1319 or AnIML, full traceability—including user ID, method version, and calibration history—is maintained across analytical runs. Firmware updates are delivered via secure download and applied without hardware modification.
Applications
Primary applications include residual solvent screening in food packaging materials (e.g., ethyl acetate, methyl ethyl ketone, isopropanol, toluene), extractables profiling in pharmaceutical primary packaging (blister foils, HDPE bottles), VOC release testing from automotive interior trim, and environmental analysis of soils and sediments per HJ 642–2013 and HJ 643–2013. It is routinely deployed in QC laboratories serving confectionery, dairy, beverage, and infant formula manufacturers where compliance with EU Directive 10/2011 and FDA 21 CFR 170–199 is mandatory. The system also supports method development for forensic toxicology (blood alcohol), flavor chemistry (volatile ester profiling), and polymer degradation studies (acetaldehyde in PET).
FAQ
What types of samples can be analyzed using the AHS-20A Plus?
Solid and semi-solid matrices—including plastic films, paperboard, adhesives, rubber compounds, soil, and pharmaceutical tablets—as well as aqueous and organic liquid extracts.
Is the instrument compatible with GC-MS systems?
Yes; the heated transfer line and low-dead-volume valve design preserve compound integrity for sensitive mass spectrometric detection, and the system supports standard GC-MS synchronization protocols.
Can the quantitative loop volume be customized?
Yes; optional loop volumes of 0.5 mL, 2 mL, and 5 mL are available to optimize sensitivity or dynamic range for specific analyte concentrations.
Does the AHS-20A Plus support multi-step equilibration or multi-headspace extraction (MHE)?
No; it is configured for single-step static headspace only. For MHE or dynamic headspace applications, consult Beifen Sanpu’s dedicated thermal desorption or purge-and-trap platforms.
What maintenance is required to ensure long-term precision?
Routine cleaning of the vial piercer needle and periodic replacement of septa and O-rings (recommended every 500 injections); no routine column or detector maintenance is required on the sampler itself.
