Beifen Sanpu AHS-20A PLUS Fully Automated Static Headspace Sampler
| Brand | Beifen Sanpu |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | OEM Manufacturer |
| Instrument Type | Static Headspace Sampler |
| Automation Level | Fully Automatic |
| Vial Heating Range | Ambient to 200 °C (1 °C increments) |
| Valve Temperature Control Range | 40–220 °C (±1 °C accuracy) |
| Sample Loop Volume | 1 mL |
| Vial Capacity | 20 positions |
| Compatible Vial Sizes | 10 mL and 20 mL |
Overview
The Beifen Sanpu AHS-20A PLUS is a fully automated static headspace sampler engineered for precise, reproducible quantification of volatile organic compounds (VOCs) in solid and liquid matrices—particularly critical for residual ethylene oxide (EO) analysis in medical devices and personal protective equipment (PPE). It operates on the principle of equilibrium headspace gas-phase extraction: samples are sealed in crimp-top vials, heated to a defined temperature to establish vapor-phase equilibrium between the condensed phase and headspace, and then a fixed volume of equilibrated headspace gas is transferred via a thermostated sampling valve and loop into a gas chromatograph (GC) for separation and detection. This method eliminates matrix interference from non-volatile components and ensures high analytical specificity and robustness—essential for regulatory compliance in ISO 10993-7 and GB/T 16886.7-2015 testing workflows.
Key Features
- Fully automated 20-position carousel with programmable vial indexing, enabling unattended batch processing of up to 20 samples per run.
- Independent dual-zone temperature control: precision-heated vial oven (ambient to 200 °C, ±1 °C) and separately regulated sampling valve/loop assembly (40–220 °C, ±1 °C), minimizing condensation and carryover.
- 1 mL fixed-volume quantitative loop ensures volumetric accuracy and inter-run repeatability—critical for trace-level EO quantitation at sub-µg/g levels.
- Integrated vial agitator (optional) enhances mass transfer kinetics during equilibration, improving recovery for semi-volatile analytes such as 2-chloroethanol (ECH).
- Robust stainless-steel fluid path with inert surface treatment resists adsorption of polar VOCs and reduces memory effects.
- RS-232 and USB interfaces support seamless integration with major GC platforms (e.g., Shimadzu GC-2010, Agilent 7890/8890) and third-party chromatography data systems (CDS).
Sample Compatibility & Compliance
The AHS-20A PLUS accommodates standard 10 mL and 20 mL crimp-top headspace vials, compatible with common septa types (PTFE/silicone, butyl rubber) and widely used in pharmaceutical, biomedical, and quality control laboratories. Its design supports direct implementation of ISO 10993-7:2008 Annex B and GB/T 16886.7-2015 test protocols for EO and ECH residue assessment in ethylene oxide-sterilized medical devices—including surgical masks, gowns, catheters, and implantable components. The system meets GLP documentation requirements when paired with compliant CDS software featuring audit trail, electronic signatures, and 21 CFR Part 11–enabled user access controls. All thermal and timing parameters are logged and exportable for regulatory submissions and internal QA audits.
Software & Data Management
Controlled via Beifen Sanpu’s dedicated HS-Link software (Windows-based), the AHS-20A PLUS provides intuitive method setup for vial heating time/temperature, equilibration delay, valve/loop heat-up profiles, pressurization pressure, and injection sequence logic. Each method stores full thermal history, vial position mapping, and run-time event logs—including valve actuation timestamps and temperature deviation alerts. Raw method files and audit trails are stored in encrypted binary format and can be exported in CSV or PDF for traceability. When integrated with validated chromatography data systems, the sampler contributes to end-to-end analytical data integrity—from sample registration through peak integration and report generation—supporting ICH M7 and USP compliance frameworks.
Applications
- Quantitative determination of residual ethylene oxide (EO) and 2-chloroethanol (ECH) in sterilized medical devices per ISO 10993-7 and GB/T 16886.7.
- Residual solvent analysis in pharmaceutical excipients, packaging materials, and single-use bioprocessing components.
- VOC profiling in environmental water, soil extracts, and polymer leachates using EPA Method 502.2 and ISO 15681-2 workflows.
- Flavor and fragrance compound screening in food matrices (e.g., coffee, dairy, fermented products) under AOAC 994.06 conditions.
- Stability-indicating assays for degradation product monitoring in accelerated aging studies of polymeric implants.
FAQ
What sample preparation is required prior to headspace analysis for EO residue testing?
Samples (e.g., mask material) are cut into uniform fragments (~1 g), placed in a 20 mL headspace vial, and spiked with 5 mL ultrapure water. Vials are sealed immediately and equilibrated at 60 °C for 40 minutes prior to injection.
Can the AHS-20A PLUS be used with non-Beifen Sanpu GC systems?
Yes—it features universal analog/digital I/O and standard GC trigger compatibility, supporting integration with Shimadzu, Agilent, Thermo Fisher, and PerkinElmer GC platforms via TTL or contact closure signals.
Is validation documentation available for IQ/OQ/PQ protocols?
Beifen Sanpu provides a comprehensive validation support package including DQ templates, factory-tested OQ checklists, and PQ protocol examples aligned with ASTM E2656 and ISO/IEC 17025 requirements.
How is carryover minimized during high-concentration EO analysis?
The system employs high-temperature valve bake-out cycles (up to 220 °C), inertized flow paths, and programmable purge durations between injections—validated to achieve ≤0.05% carryover at 10 µg/mL EO standard levels.
Does the instrument comply with FDA 21 CFR Part 11 requirements?
The AHS-20A PLUS itself is hardware-compliant; full Part 11 compliance is achieved when operated within a validated CDS environment with role-based access, electronic signatures, and immutable audit trails enabled.
