DVD Gas Trapping Device TDV-04

Overview

The DVD Gas Trapping Device TDV-04 is a precision-engineered thermal desorption system designed for quantitative recovery and concentration of volatile and semi-volatile organic compounds (VOCs and SVOCs) from solid-phase sampling media—specifically engineered for compatibility with standard DVD-format sample carriers. Unlike conventional thermal extractors, the TDV-04 implements a modular, four-zone independent heating architecture based on resistive aluminum block heaters, enabling parallel yet individually controlled thermal desorption of up to four samples under precisely defined temperature, time, and purge gas flow conditions. Each heating zone operates on the principle of controlled thermal volatilization followed by inert-gas-assisted transfer of analytes into downstream trapping or analytical systems (e.g., GC, GC-MS, or cold trap concentrators). The system is optimized for laboratories requiring reproducible, low-background, and matrix-compatible desorption workflows—particularly in environmental monitoring, forensic trace analysis, and polymer outgassing characterization.

Key Features

• Four independently programmable heating zones, each with dedicated digital temperature display and timer control (0–99 h 59 min)
• Adjustable heating range per zone: ambient to 200 °C, with ±1 °C temperature stability over full operating range
• Individual mass-flow-controlled purge gas supply (30–300 mL/min) for each zone, compatible with helium or nitrogen
• Inertized stainless-steel sample tubes (φ140 × 40 mm; 615 mL capacity), internally gold-coated to minimize adsorption and catalytic degradation of reactive analytes
• Integrated recirculating water-cooling valve manifold with air/nitrogen purge capability for condensate management and system thermal stabilization
• Modular adapter interface supporting third-party sorbent traps and capture cartridges (e.g., Tenax®, Carbopack™, or custom-packed tubes)
• Robust aluminum heater blocks with uniform thermal distribution and rapid heat-up/cool-down response

Sample Compatibility & Compliance

The TDV-04 accommodates both single and multi-DVD-format substrates—enabling direct thermal processing of polymer-based optical discs used as passive samplers in indoor air quality studies or outgassing screening per ASTM E2687 and ISO 16000-9. Its gold-coated stainless-steel sample tubes meet inertness requirements outlined in EPA Method TO-17 and USP for metallic surface interactions. All electronic controls conform to IEC 61010-1 safety standards for laboratory equipment. While the device itself does not include built-in data integrity features, its operational parameters (temperature setpoints, dwell times, gas flows) are manually logged in accordance with GLP-compliant documentation practices. When integrated into validated analytical workflows, it supports audit readiness under FDA 21 CFR Part 11 when paired with compliant LIMS or ELN systems.

Software & Data Management

The TDV-04 operates via front-panel digital controls with real-time LED displays for temperature and timer status per zone—no embedded software or PC interface is included. All parameter settings are manually entered and retained during operation without battery backup. For laboratories requiring electronic recordkeeping, external logging (e.g., via USB-connected data loggers or SCADA integration) is supported through analog output signals (0–10 V or 4–20 mA) available upon request. System calibration certificates—including temperature uniformity mapping across all four zones and flow verification at multiple setpoints—are provided with initial commissioning and recommended annually per ISO/IEC 17025 guidelines.

Applications

• Thermal desorption of VOCs from DVD-based passive samplers in building material emission testing
• Outgassing profiling of polycarbonate and acrylic optical media under accelerated aging conditions
• Method development for polymer-bound contaminant release (e.g., plasticizers, flame retardants, residual monomers)
• Pre-concentration of airborne organics collected on film substrates prior to GC-MS analysis
• Validation of inert surface performance in ultra-trace environmental sampling protocols
• Supporting ISO 12219-1 (in-vehicle air quality) and JIS K 0073 (indoor air VOC measurement) sample preparation workflows

FAQ

Can the TDV-04 be used with non-DVD sample formats?

Yes—using optional mechanical adapters, the system accepts industry-standard 1/4″–3/8″ OD sorbent tubes, stainless-steel canisters, and custom planar substrates.
Is gold coating on sample tubes certified for trace-level analysis?

Yes—the electroless gold plating undergoes batch-specific inertness validation via blank thermal desorption tests per EPA TO-17 criteria (≤5 pg analyte carryover).
What maintenance is required for long-term reliability?

Annual recalibration of temperature sensors and mass flow controllers is recommended; heater block surfaces should be cleaned with IPA after high-temperature runs involving halogenated compounds.
Does the system support automated method sequencing?

No—the TDV-04 is manually operated; however, its modular design allows integration with external programmable logic controllers (PLCs) for semi-automated batch processing.
Is CE marking available for EU installation?

Yes—the unit complies with EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU; CE declaration and test reports are supplied with shipment.