Beifen Sanpu AHS-20A Plus 20-Position Automated Static Headspace Sampler

Overview

The Beifen Sanpu AHS-20A Plus is a fully automated static headspace sampler engineered for precise, reproducible extraction and transfer of volatile organic compounds (VOCs) from liquid or solid matrices into gas chromatography (GC) systems. Operating on the principle of phase equilibrium partitioning, the instrument heats sealed sample vials to drive analytes into the headspace vapor phase; a pressurized, temperature-controlled sampling loop then withdraws a representative aliquot for injection onto the GC column. Designed for routine compliance-driven laboratories—particularly those performing environmental monitoring, pharmaceutical residual solvent analysis, food packaging migration testing, and forensic toxicology—the AHS-20A Plus delivers robust performance within ISO/IEC 17025 and GLP-aligned workflows. Its all-electric actuation eliminates reliance on external carrier gases for mechanical motion, enhancing operational safety and simplifying installation in regulated lab environments.

Key Features

• 20-position carousel with automatic vial recognition and intelligent position fault avoidance—prevents collision during tray rotation and ensures reliable unattended operation.
• Independent, PID-controlled heating zones for vial oven (ambient to 200 °C), six-port valve (40–220 °C), and transfer line (40–220 °C), eliminating cold spots and preserving analyte integrity throughout the sampling path.
• High-inertness flow path: All internal tubing and the quantitative loop are constructed from de-activated fused silica or SilcoNert®-treated stainless steel to minimize adsorption, carryover, and cross-contamination.
• Optimized fluidic architecture featuring a low-dead-volume six-port valve coupled with a 1 mL fixed-volume loop—enabling high injection precision (RSD < 1.0% at 100 ppm ethanol/water) and excellent method-to-method reproducibility.
• Full electronic parameter control via USB-connected PC software or intuitive 7-inch TFT LCD interface with animated workflow guidance—supporting rapid method setup without specialized training.
• Comprehensive self-diagnostic suite including power-on system check, motor stall detection, vial presence verification, thermal sensor validation, and real-time error logging with on-screen alerts.
• Flexible sampling protocols: single-vial multi-injection, single-vial single-injection, and multi-vial sequential injection modes—all programmable with millisecond-level timing resolution (1 ms minimum step).
• Integrated EPC-compatible optional electronic pressure control module for consistent vial pressurization across analytical runs—critical for regulatory traceability and audit readiness.

Sample Compatibility & Compliance

The AHS-20A Plus accommodates standard 10 mL and 20 mL crimp-top headspace vials (with customizable support for 50 mL and 100 mL formats upon request), enabling direct compatibility with EPA Method 502.2, USP , ICH Q2(R2), and pharmacopeial residual solvent procedures. Its validated thermal stability (< ±0.5 °C) and calibrated pressure control (0–0.25 MPa) meet the instrumental requirements specified in HJ 642–2013 (soil VOCs), HJ 810–2016 (water VOCs), and GB 5749–2006 (drinking water). The system supports full 21 CFR Part 11-compliant data governance when paired with compliant GC data systems—including electronic signatures, audit trails, and user-access tiering—making it suitable for GMP manufacturing QC labs and contract testing organizations serving FDA-regulated industries.

Software & Data Management

Instrument control and method development are performed through a dedicated Windows-based application supporting method templates, sequence scheduling, real-time status monitoring, and raw parameter export in CSV format. All acquisition parameters—including temperature ramps, pressurization profiles, loop fill times, and purge durations—are timestamped and stored with metadata (operator ID, instrument serial number, firmware version). The software generates comprehensive run logs compliant with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available), facilitating internal audits and regulatory inspections. Remote diagnostics and firmware updates are supported via secure USB connection; no cloud dependency or internet exposure is required for routine operation.

Applications

• Residual solvent quantification in pharmaceutical active ingredients and excipients per USP and ICH Q3C guidelines.
• VOC profiling in drinking water, wastewater, and groundwater per EPA 502.2 and HJ 810–2016.
• Migration testing of solvents from food contact materials (e.g., regenerated cellulose films, laminated packaging) per SN/T 4068–2014 and EU 10/2011.
• Analysis of volatile halogenated hydrocarbons in soil and sediment per HJ 736–2015 and HJ 714–2014.
• Determination of ethanol, methanol, and acetone in forensic blood samples per GA/T 842–2009.
• Quality control of tobacco paper coatings and cigarette filter additives per YC/T 207–2014.

FAQ

What sample vial sizes does the AHS-20A Plus support?
Standard configurations accommodate 10 mL and 20 mL crimp-top headspace vials. Custom trays for 50 mL and 100 mL vials are available upon request with corresponding thermal calibration documentation.

Is the instrument compatible with third-party GC systems?
Yes—it features universal TTL-level trigger outputs and accepts external start signals from any GC manufacturer. Synchronization with Agilent, Thermo Fisher, Shimadzu, PerkinElmer, and国产 GC platforms has been verified under routine laboratory conditions.

Does the system support 21 CFR Part 11 compliance?
The hardware and software architecture support Part 11 implementation when deployed with validated GC data systems (e.g., OpenLab CDS, Chromeleon, Empower) that provide electronic signatures, audit trails, and role-based access control.

Can the quantitative loop volume be modified?
The standard loop is 1 mL; optional loops of 0.5 mL, 2 mL, and 5 mL are factory-calibrated and supplied with individual certification reports traceable to NIST standards.

What maintenance intervals are recommended?
Valve seal replacement every 10,000 injections; inert liner inspection every 6 months; annual full thermal calibration using NIST-traceable reference thermometers. Preventive maintenance kits and certified calibration services are available directly from Beifen Sanpu’s Beijing service center.