Beifen Sanpu CAHS-20A Plus 20-Position Fully Automated Headspace Sampler

Overview

The Beifen Sanpu CAHS-20A Plus is a fully automated, 20-position headspace sampler engineered for precise, reproducible, and unattended sample introduction into gas chromatography (GC) systems. It operates on the principle of equilibrium headspace analysis—where volatile organic compounds (VOCs) partition between a solid or liquid sample matrix and its overlying vapor phase at controlled temperature and pressure. The instrument maintains thermal integrity across all critical zones (sample vial, valve, transfer line) to prevent condensation, adsorption, or degradation of analytes prior to GC injection. Designed for routine QC/QA laboratories, environmental testing facilities, pharmaceutical stability studies, and food & beverage authenticity screening, the CAHS-20A Plus delivers robust performance under GLP and GMP-aligned workflows.

Key Features

• Integrated 7-inch graphical LCD touchscreen with intuitive Chinese/English bilingual interface; animated setup guidance simplifies method configuration and reduces operator training time.
• Independent three-zone heating system (sample block, six-port valve, transfer line), each controllable from 40 °C to 220 °C (optionally extended to 300 °C) with ±0.5 °C accuracy and < ±0.5 °C stability—ensuring consistent equilibration kinetics and quantitative transfer.
• Motor-driven mechanical actuation eliminates reliance on external compressed air or inert gas sources, enhancing operational safety and reducing infrastructure dependencies.
• High-inertness flow path: All internal tubing, quantitative loops (standard 1 mL, optionally 0.5/2/5 mL), and sampling needles are constructed from deactived fused-silica or SilcoNert®-treated stainless steel to minimize analyte adsorption and carryover.
• Optimized six-port valve architecture with heated valve seat and minimized dead volume (< 5 µL) ensures high injection precision (RSD < 1.0% at 100 ppm ethanol/water) and long-term repeatability.
• Intelligent vial detection and collision avoidance logic automatically identifies empty or misloaded positions (10/20 mL vials), re-routes motion paths, and halts operation upon mechanical anomaly detection—protecting hardware integrity and data continuity.
• Full method automation: Equilibration → pressurization → sampling → injection → post-injection purge → vial ejection—all programmable via front panel or USB-connected PC.

Sample Compatibility & Compliance

The CAHS-20A Plus accommodates standard 10 mL and 20 mL crimp-top or screw-cap headspace vials (custom options include 50 mL and 100 mL formats). It supports liquid, semi-solid, and solid matrices—including aqueous solutions, polymers, soils, pharmaceutical tablets, and packaged foods—without derivatization. Its thermal and pressure control fidelity meets requirements for pharmacopeial methods (USP , EP 2.4.24), environmental VOC analysis (EPA Method 502.2, ASTM D6866), and residual solvent quantification per ICH Q3C guidelines. When operated with validated software, the system supports 21 CFR Part 11-compliant electronic records, including user authentication, audit trails, and electronic signatures.

Software & Data Management

Control and method development are performed via Windows-based Beifen Sanpu HeadSpace Manager software (v3.2+), accessible through native USB 2.0 connectivity. The software enables full parameter scripting—including multi-step pressurization profiles, variable equilibration times per vial, and conditional event triggers (e.g., GC ready signal synchronization). All runtime logs—temperature traces, pressure curves, valve timing events, error codes, and operator actions—are timestamped and stored with immutable metadata. Data export conforms to ASTM E1381 and AIA/AnIML standards for seamless integration with LIMS and chromatographic data systems (CDS) such as OpenLab CDS, Chromeleon, or Empower.

Applications

• Pharmaceutical: Residual solvent analysis in APIs and finished dosage forms per ICH Q3C.
• Environmental: Determination of chlorinated hydrocarbons, BTEX, and trihalomethanes in groundwater and wastewater.
• Food & Beverage: Ethanol quantification in non-alcoholic beverages; flavor compound profiling in dairy, coffee, and fermented products.
• Polymers & Packaging: Migration testing of monomers (e.g., vinyl chloride, styrene) and additives (e.g., plasticizers) from packaging into simulants.
• Clinical Toxicology: Blood alcohol concentration (BAC) measurement using static headspace-GC/FID.

FAQ

What vial sizes does the CAHS-20A Plus support?
Standard configurations accept 10 mL and 20 mL headspace vials; custom trays for 50 mL and 100 mL vials are available upon request.
Can the instrument be integrated with third-party GC systems?
Yes—it provides TTL-level trigger outputs and accepts external start signals; compatible with Agilent, Thermo Fisher, Shimadzu, PerkinElmer, and国产 GC platforms.
Is EPC (Electronic Pressure Control) included as standard?
EPC is an optional upgrade; base configuration uses precision mechanical pressure regulation with digital feedback control.
How is system validation supported?
The instrument ships with IQ/OQ documentation templates aligned with ISO/IEC 17025 and ASTM E2500; installation qualification kits and certified reference standards (e.g., NIST-traceable ethanol/water mixtures) are available separately.
Does the software support audit trail and electronic signature functionality?
Yes—when deployed with validated software version 3.2 or later and configured per site-specific SOPs, it satisfies FDA 21 CFR Part 11 requirements for regulated environments.