Beifen Sanpu AHS-201A Plus Fully Automated Static Headspace Sampler for Ethylene Oxide Residue Analysis in Medical Masks
| Brand | Beifen Sanpu |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Product Origin | Domestic (China) |
| Model | AHS-201A Plus |
| Instrument Type | Static Headspace Sampler |
| Automation Level | Fully Automatic |
| Vial Heating Range | Ambient to 200 °C (1 °C increment) |
| Valve Temperature Control Range | 40–220 °C (±1 °C accuracy) |
| Sample Loop Volume | 1 mL |
| Vial Capacity | 20 positions |
| Compatible Vial Sizes | 10 mL or 20 mL |
Overview
The Beifen Sanpu AHS-201A Plus is a fully automated static headspace sampler engineered for precise, reproducible quantification of residual ethylene oxide (EO) in sterilized medical devices—particularly surgical masks and other single-use personal protective equipment (PPE). EO is widely employed as a low-temperature gaseous sterilant in Class II and III medical device manufacturing due to its efficacy against spores, viruses, and bacteria. However, EO is classified as a Group 1 carcinogen by IARC and poses acute neurotoxic, respiratory, and dermal hazards. Regulatory compliance therefore mandates strict control of residual EO levels post-sterilization. The AHS-201A Plus implements static headspace sampling—a thermally driven equilibrium partitioning technique—where volatile EO migrates from the solid/liquid matrix into the gas phase above the sample. This vapor-phase aliquot is then transferred via heated valve and transfer line directly into a gas chromatograph (GC), enabling selective, interference-free detection using flame ionization (FID) or mass spectrometric (MS) detection. Its design aligns with the fundamental physicochemical requirements of ISO 10993-7 and GB/T 16886.7–2015 for biological evaluation of medical devices.
Key Features
- Fully automated 20-position carousel with programmable vial prioritization and sequence interruption capability for urgent samples.
- Independent temperature control for sample vials (ambient to 200 °C, ±0.5 °C stability), injection valve (40–220 °C, ±1 °C), and transfer line (up to 220 °C), minimizing condensation and carryover.
- 1 mL fixed-volume pressurized sample loop ensures volumetric precision and eliminates syringe-based variability.
- Heated GC interface with real-time pressure monitoring and leak-tight septumless valve actuation for robust inter-instrument coupling.
- Integrated method storage (≥100 methods) with user-defined ramp profiles, equilibration times, and purge cycles—fully compliant with GLP audit trail requirements.
- RS-232 and Ethernet connectivity supporting remote operation, method synchronization, and integration with LIMS or chromatography data systems (CDS).
Sample Compatibility & Compliance
The AHS-201A Plus accommodates standard crimp-top 10 mL and 20 mL headspace vials, compatible with USP , ASTM D6866, and ISO 11358-compliant sample preparation protocols. For EO residue testing per GB/T 16886.7–2015, samples are prepared as 1.0 g mask material fragments immersed in 5 mL water, sealed, and equilibrated at 60 °C for 30 minutes. The system supports validation per ICH Q2(R2) for specificity, linearity (0.5–50 µg/g), LOD/LOQ, repeatability (RSD ≤3.5%), and robustness across matrix variations (e.g., melt-blown polypropylene, non-woven layers). It meets essential requirements for FDA 21 CFR Part 11 compliance when deployed with validated CDS software—including electronic signatures, audit trails, and data integrity safeguards.
Software & Data Management
The instrument operates via Beifen Sanpu’s HSControl v3.2 software, a Windows-based platform supporting method development, real-time status monitoring, and automatic report generation in PDF or CSV format. All parameter changes, run logs, error events, and calibration records are timestamped and stored with immutable audit trails. Software features include forced method locking during routine analysis, password-protected user roles (operator, supervisor, administrator), and export functionality compatible with Empower, Chromeleon, and OpenLab CDS. Raw data files (.hsd) retain full metadata—including vial position, temperature history, valve timing, and pressure traces—for forensic traceability during regulatory inspections.
Applications
Beyond EO residue analysis in sterilized PPE, the AHS-201A Plus serves validated workflows for residual solvents in pharmaceutical packaging (ICH Q3C), volatile organic compounds (VOCs) in polymer films, ethanol in disinfectant wipes, formaldehyde in wound dressings, and chloroform in dialysis tubing. Its thermal stability and inert flow path support analysis of reactive analytes without degradation. In QC laboratories operating under ISO/IEC 17025 or GMP environments, the system functions as a core module within end-to-end EO clearance testing pipelines—integrated with GC-FID systems such as the GC-9860 and SE-54 capillary columns (30 m × 0.32 mm × 0.5 µm).
FAQ
What regulatory standards does the AHS-201A Plus support for EO testing?
It is validated for GB/T 16886.7–2015, ISO 10993-7:2008, and USP / residual solvent testing protocols.
Can the system be integrated with third-party GC platforms?
Yes—it features universal TTL and analog I/O interfaces, plus vendor-agnostic GC trigger compatibility for Agilent, Shimadzu, Thermo, and国产 GC systems.
Is method validation documentation provided?
Beifen Sanpu supplies IQ/OQ documentation templates, performance qualification (PQ) checklists, and a 3Q protocol aligned with ISO/IEC 17025 requirements.
What maintenance intervals are recommended for long-term reliability?
Valve seal replacement every 10,000 injections; loop cleaning every 500 runs; annual temperature calibration verification using NIST-traceable probes.
Does the system comply with cybersecurity requirements for networked lab instruments?
Firmware v2.1+ includes TLS 1.2 encryption for remote connections, configurable firewall rules, and disabled default credentials—meeting NIH and EU GDPR-aligned lab network policies.
