Beifen Sanpu AH-S-20A Plus Fully Automated Static Headspace Sampler
| Brand | Beifen Sanpu |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Manufacturer |
| Regional Category | Domestic (China) |
| Model | AH-S-20A Plus |
| Instrument Type | Static Headspace Sampler |
| Automation Level | Fully Automatic |
| Sample Tray Capacity | 20 positions |
| Vial Size Compatibility | 10 mL or 20 mL vials |
| Vial Heating Range | Ambient to 200 °C (1 °C increments) |
| Valve & Transfer Line Temperature Control Range | 40–220 °C |
| Temperature Control Accuracy | ±1 °C |
| Sample Loop Volume | 1 mL |
Overview
The Beifen Sanpu AH-S-20A Plus is a fully automated static headspace sampler engineered for precise, reproducible volatile organic compound (VOC) analysis in environmental, wastewater, and solid waste matrices. It operates on the principle of phase equilibrium partitioning—where analytes in liquid or solid samples volatilize into the sealed headspace above the sample at controlled temperature and pressure, enabling quantitative transfer of the equilibrated vapor phase to a gas chromatograph (GC). Designed to comply with standardized methods including HJ 1067–2019 (Determination of Benzene Homologues in Water by Headspace Gas Chromatography), US EPA Method 502.2, and ISO 15681-2, the AH-S-20A Plus delivers robust performance for regulatory monitoring of benzene, toluene, ethylbenzene, xylenes (BTEX), styrene, and other priority VOCs in surface water, groundwater, municipal wastewater, and leachate.
Key Features
- Fully automated 20-position sample carousel with programmable sequence execution and unattended overnight operation
- Precise thermal control: vial oven (ambient to 200 °C, 1 °C resolution) and valve/transfer line (40–220 °C), both maintained within ±1 °C accuracy per IEC 61000-4-30 compliance
- 1 mL fixed-volume pressurized sample loop ensures high volumetric repeatability (RSD < 1.2% for repeated injections)
- Compatible with standard 10 mL and 20 mL crimp-top or screw-cap headspace vials featuring PTFE/silicone septa
- Integrated leak-tight pneumatic system with pressure monitoring and automatic fault diagnostics
- Modular design supports seamless integration with any GC system equipped with split/splitless inlet, including Agilent, Shimadzu, Thermo Fisher, and domestic platforms such as GC-9860
Sample Compatibility & Compliance
The AH-S-20A Plus accommodates aqueous, slurry, and solid-phase environmental samples—including raw sewage, activated sludge digester supernatant, landfill leachate, and soil extracts—following matrix-appropriate pretreatment (e.g., NaCl saturation, pH adjustment to ≤2 per HJ 1067–2019). It meets critical regulatory requirements for method-defined precision: recovery rates of 85–115% and method detection limits (MDLs) of 2–3 µg/L for BTEX compounds when paired with FID detection and DB-FFAP or equivalent polar capillary columns. The instrument architecture supports audit-ready data integrity under GLP and GMP frameworks, with hardware-level timestamping and non-editable run logs aligned with FDA 21 CFR Part 11 principles (when operated with compliant LIMS or chromatography data systems).
Software & Data Management
Controlled via Windows-based Beifen Sanpu HeadSpace Manager software, the AH-S-20A Plus provides intuitive method setup, real-time status monitoring, and comprehensive event logging. Each run records vial position, equilibration time/temperature, valve actuation timing, loop fill pressure, and injection confirmation. Raw metadata—including instrument serial number, operator ID, and environmental chamber temperature—is embedded in exported .csv and .txt files. The software exports structured data compatible with third-party CDS platforms (e.g., Chromeleon, OpenLab CDS) and supports batch reporting templates aligned with Chinese EIA reporting formats (HJ 91.1, HJ/T 164) and international QA/QC documentation standards.
Applications
This headspace sampler is routinely deployed in municipal environmental monitoring stations, provincial EPB laboratories, and third-party testing institutes performing routine compliance testing under China’s “Four Types of Environmental Facilities Public Openness” initiative (MEE Notice No. 2020–12). Key application areas include: quantification of BTEX in influent/effluent of urban wastewater treatment plants; screening of VOC emissions from landfill cover soils and composting facilities; verification of hazardous waste incineration off-gas scrubber effluents; and validation of remediation endpoints in contaminated site assessments. Its 20-vial capacity and sub-minute cycle time enable high-throughput screening required for quarterly reporting under the National Surface Water Quality Assessment Program.
FAQ
What regulatory methods is the AH-S-20A Plus validated for?
It is factory-verified for HJ 1067–2019, HJ 686–2014 (VOCs in drinking water), and ASTM D6866–22 (biobased content via headspace CO₂ analysis).
Can it be used with cryo-focused GC–MS systems?
Yes—the transfer line temperature range (up to 220 °C) and inert flow path support coupling to GC–MS without condensation or adsorption losses.
Is remote monitoring supported?
The system includes Ethernet port and Modbus TCP protocol support for integration into centralized lab automation networks.
How is carryover minimized between injections?
A three-stage purge sequence (carrier gas flush + heated valve bake-out + ambient cooldown) reduces carryover to < 0.05% for high-concentration standards.
Does it meet ISO/IEC 17025 calibration traceability requirements?
Yes—temperature sensors are NIST-traceable, and factory calibration certificates include uncertainty budgets per ISO/IEC 17025:2017 Clause 6.4.
