Tekmar XPT Used Automated Purge and Trap Concentrator
| Origin | USA |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | Tekmar XPT |
| Price | ¥80,000 CNY |
| Product Category | Other |
| Service Life | 3–4 Years |
| Warranty | 6 Months |
Overview
The Tekmar XPT is a high-performance, used automated purge and trap concentrator engineered for trace-level volatile organic compound (VOC) analysis in environmental, regulatory, and industrial laboratories. Based on the proven Couette-flow principle and compliant with U.S. EPA Methods 502.2, 524.2, 524.4, and 8260D, the XPT integrates advanced thermal desorption, precise gas flow management, and real-time system diagnostics to deliver robust, reproducible VOC preconcentration prior to GC or GC-MS analysis. Unlike conventional purge-and-trap systems, the XPT employs patented Accelerated Purge and Trap (APT) technology—enabling independent, mode-specific control of purge, dry-purge, and bake gas flows—to significantly reduce cycle time without compromising recovery or chromatographic integrity. With a full-cycle runtime ≤15 minutes at 11-minute purge duration, the XPT supports up to 100% throughput improvement over legacy systems, effectively doubling sample capacity per instrument while maintaining compliance-ready data traceability.
Key Features
- Patented Accelerated Purge and Trap (APT) technology for independent, software-controlled flow regulation across purge, dry-purge, and bake modes
- Heatable trap capable of rapid heating to 350 °C and cooling at ≥127 °C/min; designed to EPA-compliant outer diameter (0.123″ ± 0.002″)
- Integrated FFC (Front-Focusing Control) pre-concentration system that thermally refocuses analytes during desorption, improving peak shape and reducing carryover
- Electronic Mass Flow Controllers (MFCs) for nitrogen or helium, supporting programmable flow ranges from 5 to 500 mL/min with <±1% full-scale accuracy
- DryFlow moisture management system—thermostatically controlled from ambient to 350 °C—removes >90% of water vapor while preserving polar VOC recovery
- Automated leak detection via integrated electronic pressure sensor with diagnostic mode for pinpointing leak locations
- Optional foam sensor and defoaming module for aqueous matrices prone to foaming during purge
- Heated transfer lines (up to 300 °C) and valves (up to 300 °C), constructed entirely from inert PEEK and stainless steel
- Embedded diagnostics and self-test routines accessible via intuitive touchscreen interface
Sample Compatibility & Compliance
The XPT accommodates aqueous, soil leachate, and solid-phase microextraction (SPME) headspace samples using standard 5 mL or optional 25 mL fritted U-tubes or needle-type purge vessels. Its trap design adheres strictly to EPA-specified dimensions and thermal profiles, ensuring method-compliant adsorption/desorption kinetics for target VOCs including BTEX, chlorinated solvents, and low-boiling hydrocarbons. The system supports GLP/GMP workflows through audit-trail-enabled software logging, timestamped sample metadata, and electronic signature-ready operation logs. It meets mechanical and electrical safety requirements per IEC 61010-1 and is compatible with 21 CFR Part 11–compliant LIMS integration when paired with validated third-party data acquisition platforms.
Software & Data Management
Controlled via Tekmar’s Velocity software (v4.x or later), the XPT provides full method scripting, real-time status monitoring, and automated report generation. All run parameters—including temperature ramps, flow profiles, valve actuation sequences, and diagnostic flags—are stored with SHA-256 hashed integrity verification. The software supports user-level access control, password-protected method editing, and export of raw data in ASTM E1381-compliant ASCII format. Audit trails record operator actions, system events, and calibration history—retained for ≥36 months unless purged under documented retention policy. Firmware updates are delivered via secure USB import with cryptographic signature validation.
Applications
- Regulatory compliance testing for drinking water, wastewater, and groundwater per EPA 524.2 and 8260D
- Soil and sediment VOC screening in Superfund site assessments
- Pharmaceutical residual solvent analysis (ICH Q3C) requiring ultra-low detection limits
- Industrial hygiene monitoring of workplace air and process emissions
- Research-grade method development for novel VOC classes, including oxygenates and sulfur compounds
FAQ
Is this unit fully refurbished and performance-verified before resale?
Yes—each used XPT undergoes full functional recalibration, leak validation, thermal profiling, and MFC linearity verification against NIST-traceable standards. A Certificate of Performance Verification is provided.
Does the 6-month warranty cover parts, labor, and on-site service?
The warranty includes all components, labor, and remote technical support. On-site service is available within continental U.S. and EU regions upon request (travel fees may apply outside standard coverage zones).
Can the XPT be integrated with third-party GC systems and LIMS?
Yes—the system features RS-232, Ethernet, and USB interfaces with open-command protocol documentation. It supports ASTM E1381 and ASTM E1910 data exchange formats for seamless LIMS interoperability.
What consumables are required for routine operation?
Standard consumables include Tenax/Carbopack B/Carboxen composite traps, DryFlow desiccant cartridges, fritted purge tubes, and PTFE-coated septa. Trap lifetime exceeds 200 runs under typical EPA conditions.
Is training included with purchase?
Comprehensive remote operator training (4 hours) and a printed SOP manual are included. Optional on-site installation and qualification (IQ/OQ) services are available at additional cost.
