Beifen Sanpu A2HS-20A Plus Fully Automated Static Headspace Sampler

Overview

The Beifen Sanpu A2HS-20A Plus Fully Automated Static Headspace Sampler is an engineered solution for precise, reproducible extraction and introduction of volatile organic compounds (VOCs) from solid or liquid matrices into gas chromatographic systems. It operates on the principle of static headspace analysis: samples are sealed in inert vials and heated to equilibrium, allowing volatile analytes to partition into the vapor phase above the sample matrix. A precisely metered volume of this equilibrated headspace gas is then transferred—via pressurized, temperature-controlled pathways—to the injection port of a coupled gas chromatograph (GC). This technique eliminates solvent use, minimizes matrix interference, and delivers high sensitivity for trace-level VOC quantification, particularly critical in regulated environments such as medical device sterilization validation, pharmaceutical residual solvent testing, and environmental monitoring.

Key Features

• Fully automated 20-position carousel with real-time positional feedback and mechanical fault detection, enabling unattended overnight operation and improved workflow throughput.
• Independent thermal control zones: sample vial oven (ambient–200 °C), six-port valve assembly (40–220 °C), and transfer line (40–220 °C), all maintained within ±1 °C stability to prevent condensation and ensure quantitative transfer integrity.
• High-inertness fluidic path: all internal tubing, quantitative loop (1 mL standard), and sampling needle constructed from de-activated fused silica or silonized stainless steel to eliminate adsorption, carryover, and cross-contamination.
• Positive-pressure sampling mechanism ensures compatibility with both liquid and solid samples without baseline disturbance; no carrier gas consumption during sampling.
• 7-inch full-color graphical LCD interface with animated workflow guidance, intuitive parameter entry, and real-time status display—including elapsed run time, temperature profiles, and system diagnostics.
• Comprehensive programmability: customizable pressurization (0–0.25 MPa), equilibration (0–999 s), sampling (0–30 min), injection (0–999 s), and post-run purge (0–30 min) intervals, with timing resolution down to 1 ms.
• USB communication interface supports bidirectional control: instrument parameters may be configured either locally or via external PC software, with synchronized GC start/stop triggering capability.

Sample Compatibility & Compliance

The A2HS-20A Plus accommodates standard 10 mL and 20 mL crimp-top headspace vials, with optional customization available for 50 mL and 100 mL formats. Its robust thermal design and inert flow path support diverse sample types—including aqueous solutions, polymer matrices, lyophilized powders, biological tissues, and packaged medical devices—without degradation or memory effects. The system complies with multiple international analytical standards governing headspace-GC methodology, including ISO 11843 (capability of detection), USP Residual Solvents, EP 2.4.24, and ICH Q2(R2) validation guidelines. It is routinely deployed for EO residue testing per GB/T 16886.7–2001 and ASTM F1980–22 (accelerated aging of sterile barrier systems), supporting GLP- and GMP-aligned laboratories requiring audit-ready documentation and traceable calibration records.

Software & Data Management

Instrument control and method development are fully supported through USB-connected PC software, enabling centralized method storage, sequence scheduling, and remote monitoring. All operational parameters—including temperature setpoints, timing sequences, pressure values, and system event logs—are digitally recorded with timestamping. The system supports 21 CFR Part 11-compliant data integrity features when integrated with validated chromatography data systems (CDS), including electronic signatures, audit trails, and user-access level management. Raw acquisition files adhere to ASTM E1983 and AIA/ANDI formats for interoperability across third-party processing platforms.

Applications

Primary applications include residual ethylene oxide (EO) quantification in sterilized medical devices (e.g., catheters, syringes, gauze packs), residual solvents in pharmaceutical excipients and active ingredients (per ICH Q3C), volatile impurities in food packaging materials, VOC profiling in environmental water and soil extracts (HJ 642–2013, HJ 736–2015), and flavor/aroma compound analysis in agricultural products. Its precision (RSD <1.0% at 100 ppm ethanol in water) and low detection limits make it suitable for QC release testing, stability studies, and regulatory submission packages.

FAQ

Is the A2HS-20A Plus compatible with non-Beifen Sanpu gas chromatographs?
Yes—it features universal analog/digital I/O and TTL synchronization signals, enabling seamless integration with Agilent, Thermo Fisher, Shimadzu, and other major GC platforms.

Can the system perform multiple injections from a single vial?
Yes—programmable multi-shot mode allows up to 99 repeated injections per vial without manual intervention.

What maintenance is required to ensure long-term performance?
Routine checks include verification of septum integrity, quantitative loop cleanliness, and thermal calibration using NIST-traceable reference standards every 6 months or per internal SOP.

Does the instrument support method validation per ICH guidelines?
Yes—its documented temperature uniformity, timing repeatability, carryover assessment protocols, and electronic record retention meet ICH Q2(R2) requirements for analytical procedure validation.

Is EPC (Electronic Pressure Control) available as a factory option?
EPC for carrier and auxiliary gas lines is available as an optional upgrade to enhance retention time stability and method robustness.