Beifen Sanpu KAHS-20A Plus Fully Automated Headspace Sampler

Overview

The Beifen Sanpu KAHS-20A Plus Fully Automated Headspace Sampler is a robust, precision-engineered sample introduction system designed for routine and regulated volatile organic compound (VOC) analysis by gas chromatography (GC). It operates on the principle of equilibrium headspace sampling: a sealed vial containing liquid or solid sample is heated to promote partitioning of analytes into the vapor phase above the matrix. After thermal equilibration, the vapor phase is pressurized and transferred—via a high-inertness quantitative loop and heated six-port valve—directly into the GC injection port. This method eliminates matrix interference, reduces column contamination, and enhances detection sensitivity for trace-level volatiles without derivatization or solvent extraction. The KAHS-20A Plus is engineered for reproducibility, operational safety, and seamless integration into QC/QA laboratories performing environmental, pharmaceutical, food safety, forensic, and polymer testing applications.

Key Features

• 20-position autosampler carousel with automatic vial recognition and intelligent skip logic—avoids empty or misaligned positions to prevent mechanical collision and ensure unattended operation.
• Triple-zone independent temperature control: sample block, valve oven, and transfer line—all maintained within ±0.5 °C stability and calibrated to 0.5% accuracy across full range (40–220 °C standard; optional 300 °C configuration available).
• Heated six-port valve mounted inside the insulated valve oven—eliminates cold spots and preserves analyte integrity during transfer.
• Full inert flow path: de-activated fused-silica or Siltek-coated stainless-steel tubing and quantitative loops minimize adsorption, carryover, and memory effects; validated RSD <1.0% for 100 ppm ethanol in aqueous matrix.
• Motor-driven actuation system—no external pneumatic supply required—reduces facility dependencies and improves lab safety and footprint efficiency.
• 7-inch TFT LCD touchscreen with intuitive Chinese/English bilingual interface; animated workflow guidance enables rapid operator training and protocol deployment.
• Flexible injection modes: single-vial multiple injections, single-vial single injection, or multi-vial sequential single injections—configurable via embedded firmware or PC software.
• Comprehensive self-diagnostic suite: power-on hardware check, positional encoder validation, thermal sensor verification, and real-time fault logging with audible/visual alerts.
• USB 2.0 interface for bidirectional communication with Windows-based GC control software; supports synchronized start triggers for GC oven, detector, and data acquisition modules.

Sample Compatibility & Compliance

The KAHS-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 accepts both liquid and solid matrices—including aqueous solutions, soils, polymers, pharmaceutical tablets, and packaged foods—without modification. All wetted surfaces are chemically inert and compliant with USP , ISO 10993-1, and ASTM D3699-grade material specifications. When operated within validated methods and paired with 21 CFR Part 11–compliant chromatography data systems (e.g., Thermo Chromeleon, Agilent OpenLab CDS, or Waters Empower), the instrument supports GLP and GMP documentation requirements—including electronic signatures, audit trails, and change control logs. Its design aligns with ISO/IEC 17025:2017 clause 6.4.3 (equipment suitability) and ASTM D6866-22 (headspace method validation guidelines).

Software & Data Management

Control and method development are performed via dedicated Windows application (Windows 10/11, 64-bit) supporting I/O synchronization, sequence scheduling, parameter archiving, and real-time status monitoring. All method parameters—including temperature ramps, timing intervals (down to 1 ms resolution), pressure profiles, and rinse cycles—are fully scriptable and exportable in CSV or XML format. Raw instrument logs—including thermal history, valve actuation timestamps, error codes, and calibration events—are stored locally with date/time stamping and can be exported for regulatory review. Optional EPC (Electronic Pressure Control) module provides closed-loop carrier gas regulation, improving retention time reproducibility and enabling method portability across GC platforms.

Applications

• Residual solvent analysis in pharmaceutical APIs and excipients (ICH Q3C compliant)
• VOC profiling in drinking water, wastewater, and soil extracts (EPA Methods 502.2, 524.4, 8260D)
• Flavor and fragrance compound quantification in beverages and dairy products
• Monomer and catalyst residue testing in polymer manufacturing (e.g., vinyl chloride, styrene, ethylene oxide)
• Forensic toxicology screening for ethanol, acetone, and volatile drugs of abuse
• Package integrity testing via headspace O₂/CO₂/moisture analysis in modified-atmosphere packaging (MAP)

FAQ

What sample vial sizes does the KAHS-20A Plus support?
Standard configurations accommodate 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 features TTL-level trigger I/O and USB-based command protocol compatible with Agilent, Shimadzu, Thermo Fisher, PerkinElmer, and国产 GC brands.
Is EPC (Electronic Pressure Control) included as standard?
EPC is an optional upgrade; base configuration uses mechanical pressure regulation with digital setpoint control.
How is carryover minimized between samples?
Through programmable high-flow nitrogen or helium purge cycles (0–100 mL/min), heated transfer line (≥220 °C), and inert surface treatment of all fluidic components.
Does the system support 21 CFR Part 11 compliance?
The hardware supports audit-trail-ready operation when connected to a validated CDS; user responsibilities include access control setup, electronic signature implementation, and periodic system suitability verification.