Clarete AHSS-12 Fully Automated Static Headspace Sampler
| Brand | Clarete |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Region of Origin | Domestic (China) |
| Model | AHSS-12 |
| Instrument Type | Static Headspace Sampler |
| Automation Level | Fully Automated |
| Sample Vial Heating Range | Ambient to 260 °C (1 °C increments) |
| Valve & Transfer Line Temperature Control Range | Ambient to 260 °C (1 °C increments) |
| Sample Loop Volume | Standard 2.5 mL (customizable to 5.0 mL) |
| Vial Capacity | 110 positions |
| Compatible Vial Sizes | 10 mL and 20 mL |
| Temperature Control Accuracy | <±0.1 °C |
| Repeatability | RSD ≤1.5% (ethanol in water) |
| Pressure Control Range | 0–0.4 MPa (continuously adjustable) |
| Heating Zones | Three independent zones (vial oven, valve, transfer line) |
| Microprocessor | 32-bit ARM-based high-precision temperature controller with 0.1 °C resolution |
Overview
The Clarete AHSS-12 Fully Automated Static Headspace Sampler is a precision-engineered chromatographic accessory designed for reliable, unattended volatile compound analysis in gas chromatography (GC) workflows. It operates on the static headspace principle—equilibrating liquid or solid samples in sealed vials at controlled temperature and pressure, then extracting the vapor-phase analytes above the sample matrix for direct injection into a GC system. This method eliminates solvent interference, reduces matrix effects, and enhances detection sensitivity for trace-level volatiles such as residual solvents, environmental contaminants, flavor compounds, and pharmaceutical impurities. The AHSS-12 integrates three independently controlled heating zones (vial oven, sampling valve, and transfer line), ensuring thermal homogeneity across the entire sample path and eliminating cold spots that could cause condensation or analyte loss. Its architecture supports ISO/IEC 17025-aligned laboratory practices and is compatible with GLP/GMP environments where audit-ready operation and consistent thermal performance are required.
Key Features
- Fully automated operation with 110-vial carousel capacity—enables overnight and multi-day unattended batch processing without manual intervention.
- Triple-zone temperature control (vial oven, valve, transfer line), each programmable from ambient to 260 °C in 1 °C increments, with accuracy better than ±0.1 °C and resolution of 0.1 °C.
- Onboard 32-bit ARM microprocessor for real-time thermal regulation, self-diagnostics at startup, and periodic automatic calibration to maintain inter-run consistency.
- Inert gas purge cycle after each injection—automatically flushes the sampling loop, valve, and transfer line with carrier-grade nitrogen or helium to prevent carryover and cross-contamination.
- Configurable sample loop volume: standard 2.5 mL loop with optional 5.0 mL configuration to accommodate diverse concentration ranges and regulatory method requirements (e.g., USP <467>, ICH Q3C).
- Wireless connectivity via Wi-Fi or Ethernet—supports remote monitoring and status updates on PCs, tablets, or lab network dashboards without dedicated cabling.
- Pressure-controlled equilibration (0–0.4 MPa, continuously adjustable) for optimized phase partitioning in challenging matrices, including viscous or semi-solid samples.
Sample Compatibility & Compliance
The AHSS-12 accommodates standard 10 mL and 20 mL crimp-top or screw-cap headspace vials, compatible with widely adopted autosampler trays and robotic handling systems. Its inert flow path—constructed from electropolished stainless steel and chemically resistant seals—ensures compatibility with aggressive solvents, acidic/basic matrices, and thermally labile compounds. The instrument meets essential functional requirements for compliance with ASTM D3699 (residual solvents in fuels), USP <467> (residual solvents in pharmaceuticals), and ISO 11843-7 (detection capability for headspace-GC). While not certified to FDA 21 CFR Part 11 out-of-the-box, its software architecture supports integration with validated LIMS or chromatography data systems (CDS) that provide electronic signature, audit trail, and user access control—enabling full Part 11 compliance in regulated laboratories.
Software & Data Management
The AHSS-12 is operated via a web-based interface accessible through any modern browser—no proprietary client installation required. Method files store complete thermal profiles, pressure settings, vial positioning maps, and sequence logic. All system events—including temperature deviations, valve actuation timestamps, purge cycles, and error logs—are timestamped and retained locally for ≥30 days. Raw event data can be exported in CSV format for external validation or trending analysis. When paired with compliant CDS platforms (e.g., Thermo Chromeleon, Agilent OpenLab, or Waters Empower), the sampler supports full electronic record integrity, including operator attribution, change history, and secure archiving aligned with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available).
Applications
- Pharmaceutical quality control: residual solvent testing per ICH Q3C guidelines in APIs and finished dosage forms.
- Food and beverage analysis: quantification of ethanol, aldehydes, esters, and off-flavor compounds in wines, spirits, dairy, and packaged foods.
- Environmental testing: determination of volatile organic compounds (VOCs) in soil, water, and waste extracts per EPA Methods 502.2, 524.4, and 8260D.
- Polymer and packaging migration studies: detection of extractables and leachables from plastic containers, adhesives, and coatings.
- Clinical toxicology: blood alcohol concentration (BAC) measurement and volatile metabolite profiling in forensic labs.
FAQ
What types of GC instruments is the AHSS-12 compatible with?
The AHSS-12 features universal GC interface hardware and standard analog/digital I/O signals, enabling seamless integration with all major GC platforms—including Agilent, Thermo Fisher, Shimadzu, PerkinElmer, and Bruker—via vendor-specific trigger cables or contact closure protocols.
Does the AHSS-12 support method validation according to pharmacopeial standards?
Yes. Its thermal stability (<±0.1 °C), repeatability (RSD ≤1.5%), and programmable equilibration parameters meet the instrumental performance criteria outlined in USP <467> and EP 2.4.24 for headspace sampling systems.
Can the instrument be integrated into a fully automated laboratory workflow?
Absolutely. With its 110-vial capacity, wireless connectivity, and standardized communication protocols, the AHSS-12 interfaces directly with robotic sample handlers, LIMS, and enterprise CDS—supporting end-to-end automation from sample registration to report generation.
Is routine maintenance required beyond daily purging?
Scheduled maintenance includes quarterly inspection of septa and O-rings, annual verification of temperature calibration against NIST-traceable references, and biannual cleaning of the vial piercer mechanism—procedures documented in the included service manual and aligned with ISO/IEC 17025 preventive maintenance guidelines.
