Zhongxinghuili DK-5001A Fully Automated Static Headspace Sampler
| Brand | Zhongxinghuili |
|---|---|
| Origin | Beijing, China |
| Instrument Type | Static Headspace Sampler |
| Sample Tray Capacity | 36 positions |
| Heating Positions in Oven | 9 |
| Vial Size | 20 mL |
| Loop Volume | 1 mL (optional: 0.5 mL or 3 mL) |
| Vial Oven Temperature Range | 40–200 °C (1 °C increments) |
| Valve & Loop Heater Range | 40–220 °C (1 °C increments) |
| Transfer Line Temperature Range | 40–220 °C (1 °C increments) |
| Display | Color LCD |
| Communication | USB + Ethernet (Modbus TCP) |
Overview
The Zhongxinghuili DK-5001A Fully Automated Static Headspace Sampler is an engineered solution for precise, reproducible 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 and injecting the vapor-phase headspace into a GC system. Designed for routine QC laboratories, environmental testing facilities, pharmaceutical development labs, and food & beverage quality control environments, the DK-5001A delivers robust thermal management, minimized positional temperature gradients, and integrated safety protocols to ensure method transferability and regulatory compliance across analytical batches.
Key Features
- Patented uniform-temperature vial oven with nine independent heating positions—engineered to reduce inter-position thermal deviation to < ±0.5 °C, enhancing inter-vial precision and long-term method stability.
- Automated loop and transfer line heating zones (40–220 °C, 1 °C resolution), independently programmable from vial oven settings to prevent condensation and adsorption losses during analyte transport.
- Self-cleaning valve and sampling path architecture: automatic back-flush of injection valve and sample loop post-injection minimizes carryover and cross-contamination between samples.
- Real-time multi-sensor diagnostics: integrated thermocouples, pressure transducers, and heater status monitors feed continuous health data to the embedded controller; fault conditions trigger audible/visual alerts and graceful shutdown sequences.
- Comprehensive safety suite: over-temperature cutoff, under-temperature alarm, low carrier gas pressure detection, and fail-safe power interruption—all compliant with IEC 61010-1 electrical safety standards for laboratory instrumentation.
- Modular needle interface: standardized Luer-lock or GC-compatible ferrule fittings enable seamless integration with Agilent, Thermo Fisher, Shimadzu, PerkinElmer, and other major GC platforms without adapter kits.
Sample Compatibility & Compliance
The DK-5001A accommodates standard 20 mL crimp-top or screw-cap headspace vials (ASTM D6866-compliant geometry). Its 36-position sample tray supports unattended operation across extended batch runs—including calibration curves, QC replicates, and multi-level spike recovery studies. The instrument’s thermal control architecture meets ISO 17025 requirements for temperature uniformity verification, and its operational logs—timestamped, user-annotated, and non-erasable—support GLP/GMP audit readiness. While not FDA 21 CFR Part 11–validated out-of-the-box, its Modbus TCP interface enables integration into validated LIMS or CDS environments where electronic signature and audit trail functions are externally managed.
Software & Data Management
Control is executed via an intuitive color LCD interface with tactile navigation buttons—no external PC required for basic method execution. All parameters (equilibration time, oven ramp rates, pressurization dwell, injection duration) are editable in real time with password-protected user levels. USB host port allows firmware updates and export of run logs (CSV format); Ethernet interface (Modbus TCP) enables bidirectional communication with third-party GC data systems—supporting remote start/stop, status polling, and event-triggered method loading. Raw thermal and pressure telemetry is logged at 1 Hz and retained for ≥30 days onboard.
Applications
- Residual solvent analysis per USP and ICH Q3C guidelines in pharmaceutical APIs and excipients.
- Volatile organic compound (VOC) profiling in drinking water (EPA Method 502.2, 524.4) and soil extracts.
- Alcohol quantification in forensic blood samples and fermented beverages (AOAC 989.01).
- Flavor and fragrance release kinetics in packaged foods and cosmetics.
- Monomer residual testing in polymer manufacturing (e.g., styrene, vinyl chloride).
FAQ
What vial formats does the DK-5001A support?
Standard 20 mL headspace vials with crimp-seal or screw-cap closures. Vial dimensions comply with ASTM D6866 and ISO 15198 specifications.
Can the instrument be integrated into a validated chromatography data system (CDS)?
Yes—via Modbus TCP over Ethernet. Full integration requires configuration within the CDS vendor’s driver framework; validation documentation must be generated per site-specific IQ/OQ protocols.
Is the 1 mL loop volume fixed, or can it be changed during operation?
Loop volume is hardware-defined per installed module. Optional 0.5 mL and 3 mL loops require manual replacement by qualified service personnel—not field-swappable.
Does the DK-5001A meet any international calibration or traceability standards?
Temperature zones are calibrated using NIST-traceable dry-block calibrators; factory calibration certificates include as-found/as-left data per ISO/IEC 17025 Annex A.3.
What maintenance intervals are recommended for optimal performance?
Valve seal inspection every 500 injections; transfer line bake-out weekly if analyzing high-boiling or reactive compounds; full system leak check prior to each 200-sample batch.
