Beifen Sanpu ATDS-3420 Automated Thermal Desorber
| Brand | Beifen Sanpu |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Product Origin | Domestic (China) |
| Model | ATDS-3420 |
| Pricing | Upon Request |
Overview
The Beifen Sanpu ATDS-3420 Automated Thermal Desorber is a benchtop sample introduction system engineered for quantitative analysis of volatile and semi-volatile organic compounds (VOCs and SVOCs) in solid-phase microextraction (SPME) tubes, sorbent tubes (e.g., Tenax®, Carbopack™), and diffusion samplers. It operates on the principle of controlled thermal desorption—where analytes trapped on sorbent media are thermally released under inert gas flow, concentrated onto a cryo-focused or trap-based interface, and then rapidly injected into a gas chromatograph (GC) as a narrow, solvent-free band. This technique eliminates solvent use, minimizes matrix interference, and delivers detection limits down to sub-ppb levels in air, soil headspace, and biological matrices—making it essential for regulatory compliance testing, occupational hygiene monitoring, and forensic trace analysis.
Key Features
- Triple-zone independent temperature control: Sample bed (room temperature to 400 °C), valve manifold (RT–160 °C), and transfer line (RT–160 °C), all with ±0.5 °C stability and programmable ramping
- Eight-step, three-event time-programmable operation supporting fully automated desorption, GC trigger synchronization, trap cooling/focusing (if interfaced), and post-analysis tube purging
- Nine user-editable, non-volatile method storage slots enabling rapid method recall and reproducible sequence execution across shifts
- Integrated back-flush capability for sorbent tube cleaning between runs, reducing carryover and extending tube lifetime
- Modular GC interface: Compatible with all major GC systems (Agilent, Thermo Fisher, Shimadzu, PerkinElmer, etc.) without hardware modification; supports both split/splitless and PTV inlets
- Optional 0.53 mm i.d. fused-silica transfer line for enhanced transmission of labile or polar analytes
- Industrial-grade pneumatic actuators (imported components) ensure long-term reliability and precise valve timing
- Intuitive Chinese-language LCD interface with real-time status display, calendar clock, self-diagnostic firmware, and adjustable screen brightness
- Dual gas control: Independent carrier gas regulation for desorption and purge flows (0–20 mL/min, continuously adjustable)
Sample Compatibility & Compliance
The ATDS-3420 accommodates standard 6 mm o.d. × 90 mm sorbent tubes (e.g., Tenax TA, Carbograph™, Carboxen™) and custom-packed tubes up to 1/4″ o.d. It supports passive and active air sampling per ISO 16000-6, EPA TO-17, and ASTM D6196 methodologies. Its performance aligns with GB 50325-2020 (formerly GB 50325-2006) requirements for indoor air benzene and TVOC quantification. While not certified to ISO/IEC 17025 or FDA 21 CFR Part 11 out-of-the-box, its deterministic timing, method traceability, and audit-ready parameter logging support GLP/GMP-aligned workflows when integrated with compliant chromatography data systems (CDS).
Software & Data Management
The instrument operates autonomously via embedded firmware with no PC dependency. All method parameters—including temperature ramps, event timings, gas flow setpoints, and GC trigger logic—are stored internally and timestamped. When paired with third-party CDS platforms (e.g., OpenLab CDS, Chromeleon, Empower), the ATDS-3420 can be triggered via TTL or contact closure signals, ensuring synchronized acquisition and metadata correlation. Raw operational logs (start/stop times, temperature deviations, error codes) are retained in non-volatile memory for troubleshooting and quality review. Optional RS-232 or USB-to-serial adapters enable remote configuration and batch method upload.
Applications
- Indoor air quality assessment per GB 50325, ISO 16000, and EPA Method TO-17
- Occupational exposure monitoring for OSHA-PEL and ACGIH-TLV compounds
- Rapid field screening of unknown airborne hazards using portable GC-MS coupling
- Residual solvent analysis in pharmaceuticals (ICH Q3C) and packaging materials (FDA 21 CFR 174–178)
- Forensic toxicology: Detection of volatiles in blood headspace, breath condensate, and post-mortem tissues
- Flavor & fragrance profiling in food, cosmetics, and essential oils
- Environmental site assessment: Soil vapor intrusion, landfill emissions, and remediation verification
- Chemical safety surveillance in defense facilities and storage depots
FAQ
Is the ATDS-3420 compatible with cryofocusing traps?
Yes—when equipped with an external liquid nitrogen or Peltier-cooled trap module, the ATDS-3420 supports cold trapping for enhanced sensitivity and resolution of light VOCs.
Can it handle multi-bed sorbent tubes?
Yes—the 400 °C maximum desorption temperature and programmable two-stage heating profiles accommodate thermal desorption of complex multi-sorbent configurations (e.g., Tenax TA + Carbopack B + Carbosieve SIII).
Does it support 2D-GC coupling?
It provides precise timed injection triggers required for heart-cut or comprehensive 2D-GC setups, though modulator control remains external to the desorber.
What maintenance is required for long-term operation?
Routine checks include verifying gas line integrity, cleaning the valve manifold quarterly, replacing septa in inlet ports, and calibrating temperature sensors annually using NIST-traceable references.
Is remote diagnostics supported?
Basic fault codes and operational history are accessible via serial interface; full remote monitoring requires integration with facility SCADA or LabVantage via Modbus RTU (custom firmware option).
