Beifen Sanpu AHS-20A Plus Automated Static Headspace Sampler
| Brand | Beifen Sanpu |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Product Category | Domestic |
| Model | AHS-20A 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 |
| Sample Capacity | 20 positions |
| Compatible Vial Sizes | 10 mL or 20 mL |
Overview
The Beifen Sanpu AHS-20A Plus is a fully automated static headspace sampler engineered for precise, reproducible analysis of volatile organic compounds (VOCs) in complex solid and liquid matrices—including soils, sediments, water, food, pharmaceuticals, and environmental samples. It operates on the principle of thermodynamic equilibrium partitioning: under controlled temperature and time, analytes volatilize from the sample matrix into the headspace above it. Once equilibrium is achieved, a precisely metered volume of the equilibrated vapor phase is transferred—via a thermostatted sampling valve and fixed-volume loop—to a gas chromatograph (GC) for separation and subsequent detection (e.g., by MS, FID, or ECD). Designed to meet the rigorous demands of regulatory environmental testing, the AHS-20A Plus supports standardized methodologies including EPA Method 502.2, EPA Method 8260D, ISO 15681-2, and China’s HJ 605-2011 and HJ 741-2015 for VOC determination in soil and sediment. Its robust architecture ensures consistent thermal stability, minimal carryover, and high inter-run reproducibility—critical for trace-level quantification at sub-ppb concentrations.
Key Features
- Fully automated 20-position sample carousel with programmable vial indexing and priority queue handling
- Independent, dual-zone temperature control: vial oven (ambient to 200 °C, ±1 °C) and heated transfer valve/loop (40–220 °C, ±1 °C), minimizing condensation and adsorption losses
- 1 mL fixed-volume pressurized sampling loop with inert, low-dead-volume pathway and PTFE-sealed septa compatibility
- Integrated pressure regulation and leak-tight pneumatic circuitry compliant with ISO 5182 and ASTM D3612 requirements
- Intelligent vial recognition via optical sensor; automatic cap piercing and resealing sequence to ensure hermetic sealing during equilibration
- Embedded real-time diagnostics, self-calibration routines, and event-driven error logging for GLP/GMP traceability
- RS-232 and Ethernet interfaces for seamless bidirectional communication with GC/MS systems and LIMS integration
Sample Compatibility & Compliance
The AHS-20A Plus accommodates standard 10 mL and 20 mL crimp-top or screw-cap headspace vials with PTFE/silicone septa, supporting both aqueous and heterogeneous solid-phase samples—including homogenized soils, freeze-dried sediments, sludge digests, and polymer extracts. It complies with method validation requirements per ICH Q2(R2), USP , and ISO/IEC 17025:2017 for analytical instrument qualification. All thermal zones are validated using NIST-traceable PT100 sensors and certified reference materials (e.g., benzene, chloroform, toluene in water). The system supports audit-ready electronic records—including full run logs, temperature profiles, pressure traces, and operator metadata—aligned with FDA 21 CFR Part 11 and EU Annex 11 data integrity principles.
Software & Data Management
Controlled via Beifen Sanpu’s HS-Link™ software (v3.2+), the AHS-20A Plus provides intuitive method setup with multi-step equilibration protocols (heat time, agitate-on/off, pressurization delay, loop fill/purge cycles), user-defined calibration sequences (external standard, internal standard, standard addition), and real-time monitoring of critical parameters. Raw method files include embedded checksums and digital signatures. Data export conforms to ASTM E1394 and ASTM E1946 standards, enabling direct ingestion into Chromatography Data Systems (CDS) such as OpenLab CDS, Chromeleon, or Empower. Audit trails record all parameter changes, user logins, method modifications, and hardware status events—with retention configurable to ≥36 months.
Applications
The AHS-20A Plus is routinely deployed in accredited environmental laboratories for EPA 8260D-compliant analysis of 35+ priority VOCs—including vinyl chloride, chloroform, benzene, toluene, ethylbenzene, xylenes (BTEX), chlorobenzenes, and trihalomethanes—in soil, groundwater, and wastewater. It enables routine compliance testing per China’s HJ 605-2011 (VOCs in soil) and HJ 741-2015 (VOCs in sediment), as well as food safety screening (e.g., residual solvents in packaging, ethanol in beverages) and pharmaceutical QC (ICH Q3C residual solvents). Its thermal stability and inert flow path support extended method ruggedness across diverse matrices—from high-salinity brines to acidic digestates—without performance drift or column contamination.
FAQ
What sample types are compatible with the AHS-20A Plus?
Solid matrices (soil, sediment, tissue), liquids (water, blood, solvents), and semi-solids (sludge, creams, polymers) — provided they are sealed in standard 10 mL or 20 mL headspace vials with appropriate septa.
Does the system support internal standard addition?
Yes — via optional integrated syringe pump module (sold separately), enabling automated post-equilibration spiking prior to injection.
Is the AHS-20A Plus compatible with third-party GC/MS systems?
Fully compatible with Agilent, Thermo Fisher, Shimadzu, and PerkinElmer GC/MS platforms via standard RS-232 or TCP/IP command sets (ASTM E1394-compliant protocol).
How is carryover minimized between runs?
Through programmable high-temperature valve bake-out (up to 220 °C), inertized stainless-steel flow path, and vacuum-assisted purge cycles with adjustable dwell times.
Can method parameters be locked for regulated environments?
Yes — HS-Link™ supports role-based access control (RBAC), electronic signatures, and immutable method archiving to satisfy 21 CFR Part 11 requirements.
