Beifen Sanpu AHS-20B Fully Automated 20-Position Headspace Sampler
| Brand | Beifen Sanpu |
|---|---|
| Model | AHS-20B |
| Automation Level | Fully Automated |
| Sample Tray Capacity | 20 vials |
| Simultaneous Heating Positions | 6 |
| Vial Size | 20 mL (customizable: 10 mL, 50 mL, 100 mL) |
| Oven Temperature Range | 40–220 °C (optional up to 300 °C), accuracy ±1 °C |
| Valve & Transfer Line Temperature Range | 40–220 °C (optional up to 300 °C), accuracy ±1 °C |
| Temperature Stability | <±0.5 °C |
| Temperature Accuracy | ±0.5% of setpoint |
| Pressurization Time | 0–999 s |
| Sampling Time | 0–30 min |
| Injection Time | 0–999 s |
| Cleaning Time | 0–30 min |
| Pressurization Pressure | 0–0.25 MPa (continuously adjustable) |
| Loop Volume | 1 mL (customizable: 0.5 mL, 2 mL, 5 mL) |
| RSD | <1.5% (100 ppm ethanol in water) |
| Purge Flow Rate | 0–100 mL/min (continuously adjustable) |
| Communication Interface | USB |
| Net Weight | 31.25 kg |
| Compliance | Designed for GLP/GMP environments |
Overview
The Beifen Sanpu AHS-20B is a fully automated, 20-position headspace sampler engineered for high-throughput, reproducible volatile organic compound (VOC) analysis in conjunction with gas chromatography (GC) and GC-MS systems. It operates on the principle of equilibrium headspace sampling—where volatile analytes partition between a solid or liquid sample matrix and the gaseous phase above it inside a sealed vial—and employs positive-pressure transfer to deliver the equilibrated vapor directly into the GC inlet. This method eliminates solvent interference, reduces column contamination, and ensures baseline stability during injection. The AHS-20B is designed for laboratories requiring unattended operation across diverse sample types—including environmental water, pharmaceutical formulations, food matrices, forensic evidence, and polymer extracts—while maintaining strict adherence to analytical rigor and regulatory expectations.
Key Features
- 20-vial carousel with independent position detection: Enables full traceability and automatic recognition of vial placement, supporting repeat injections from the same vial and minimizing operator error.
- 6-zone heated sample tray: Allows staggered heating cycles—where one batch equilibrates while another is being pressurized or injected—maximizing instrument uptime and throughput without thermal cross-talk.
- Integrated thermal management: All critical components—the six-port sampling valve, transfer line, and oven—are housed within a thermally insulated chamber with individually controlled zones, eliminating cold spots and ensuring quantitative transfer of thermally labile compounds.
- Motor-driven actuation system: Eliminates reliance on external compressed gas sources, reducing infrastructure requirements and improving operational safety in regulated lab environments.
- Comprehensive thermal validation: Temperature stability maintained at <±0.5 °C; accuracy certified to ±0.5% of setpoint across the full 40–220 °C range (extendable to 300 °C upon request).
- Configurable loop volumes (0.5–5 mL): Optimizes sensitivity and dynamic range for trace-level VOCs or high-concentration volatiles without hardware modification.
- Automated backflush and purge: Adjustable flow (0–100 mL/min) and timing parameters ensure effective removal of residual analytes between injections, preventing carryover and enabling robust multi-method scheduling.
- Self-diagnostic firmware: Real-time monitoring of heater status, pressure integrity, motor positioning, and thermal deviation—with automatic power cutoff if temperature exceeds user-defined safety thresholds.
Sample Compatibility & Compliance
The AHS-20B accommodates standard 20 mL crimp-top headspace vials (also compatible with 10 mL, 50 mL, and 100 mL formats upon customization), supporting both liquid and solid samples—including slurries, tablets, soils, and polymers—without derivatization. Its inert sample pathway—constructed from SilcoNert®-treated stainless steel and PTFE-lined components—minimizes adsorption and degradation of reactive species such as aldehydes, sulfur compounds, and low-molecular-weight esters. The system meets essential design criteria for GLP and GMP workflows: temperature logs are time-stamped and non-erasable; sequence execution records include vial ID, timestamp, parameter set, and hardware event flags. When paired with compliant chromatography data systems (CDS), it supports 21 CFR Part 11 audit trail generation, electronic signature enforcement, and role-based access control—fully aligned with FDA, EMA, and ISO/IEC 17025 documentation requirements.
Software & Data Management
Control is executed via a dedicated Windows-based application offering dual-language UI (English/Chinese) and configurable light/dark themes for ergonomic long-term use. Up to 100 validated methods—including temperature ramps, pressurization profiles, loop fill durations, and GC trigger logic—can be stored locally with version history. The software implements hierarchical user permissions (administrator, analyst, viewer), restricting access to calibration logs, method editing, and audit trail deletion. Real-time dynamic visualization displays active vial positions, thermal status, pressure curves, and remaining run time per sample. USB 2.0 communication enables seamless synchronization with third-party GCs and CDS platforms—including Agilent OpenLab, Thermo Chromeleon, Shimadzu GCsolution, and Waters Empower—via standardized GC trigger protocols and TTL-compatible event signaling.
Applications
The AHS-20B is routinely deployed in environmental labs for EPA Method 502.2 and 8260D compliance testing of chlorinated solvents in groundwater; in pharmaceutical QC for residual solvent analysis per ICH Q2(R2) and USP ; in food safety labs for flavor profiling, ethanol quantification, and packaging migration studies (e.g., ISO 11843-2); and in forensic toxicology for blood alcohol determination using headspace-GC-FID. Its 6-position simultaneous heating capability significantly reduces cycle time for batched clinical specimens or stability-indicating assays where multiple concentration levels require parallel equilibration.
FAQ
What vial sizes does the AHS-20B support?
Standard configuration accommodates 20 mL headspace vials; optional adapters enable use of 10 mL, 50 mL, and 100 mL formats.
Can the system be integrated with GC-MS instruments?
Yes—via standard TTL triggering and analog signal compatibility; all major GC-MS vendors (Agilent, Thermo, Shimadzu, PerkinElmer) are supported through preconfigured interface modules.
Is the software 21 CFR Part 11 compliant?
The base software provides full audit trail logging and user authentication; Part 11 compliance requires deployment with a validated CDS platform and documented procedural controls.
Does the instrument support method validation protocols?
Yes—RSD <1.5% (100 ppm ethanol in water) demonstrates precision performance; temperature stability and pressure repeatability data are included in factory certification reports.
What maintenance is required for long-term reliability?
Routine tasks include quarterly verification of vial seal integrity, annual calibration of temperature sensors and pressure transducers, and semiannual inspection of valve rotor seals—full procedures and SOP templates are provided in the technical manual.
