Tekmar Velocity XPT Purge and Trap Concentrator (Refurbished)

Overview

The Tekmar Velocity XPT Purge and Trap Concentrator (refurbished) is a high-performance, laboratory-grade volatile organic compound (VOC) preconcentration system engineered for gas chromatography (GC) and GC–mass spectrometry (GC–MS) workflows. Based on the established principles of purge-and-trap methodology—where VOCs are volatilized from aqueous or solid-phase samples under controlled helium or nitrogen flow, trapped on a sorbent column, thermally desorbed, and transferred quantitatively to the GC inlet—the Velocity XPT implements patented Accelerated Purge and Trap (APT™) technology. This architecture enables independent, real-time control of purge, dry purge, and bake gas flow rates across all operational modes, significantly reducing cycle times without compromising method robustness or analyte recovery. Designed and originally manufactured in Canada, this refurbished unit undergoes full OEM-equivalent refurbishment—including leak testing, thermal calibration verification, trap integrity validation, and firmware update to the latest stable release—ensuring compliance with EPA Methods 502.2, 524.2, 624, 8260D, and ISO 15681-2.

Key Features

• Patented Accelerated Purge and Trap (APT™) technology enabling independent flow rate control during purge, dry purge, and bake stages
• Reduced total sample cycle time by up to 45% compared to prior-generation Tekmar systems (e.g., Atomx XYZ)
• 25% faster cryogenic cooler recovery post-bake, minimizing idle time between runs
• Integrated intelligent diagnostics with self-test routines, real-time pressure monitoring, and fault logging compliant with GLP audit requirements
• Modular trap design supporting standard 0.25 mm ID fused-silica transfer lines and compatibility with multiple sorbent configurations (e.g., Tenax TA/Carboxen 1000/Carbopack B)
• Full I/O integration via RS-232 and Ethernet for seamless synchronization with autosamplers (e.g., CTC PAL, Gerstel MPS) and LIMS environments

Sample Compatibility & Compliance

The Velocity XPT accommodates aqueous matrices (drinking water, wastewater, groundwater), soil/sediment slurries (EPA Method 5035B), and solid-phase microextraction (SPME) vials via optional accessories. All refurbished units are validated per ASTM D7717 and meet performance criteria outlined in US EPA Contract Laboratory Program (CLP) guidelines. System qualification includes documented installation qualification (IQ), operational qualification (OQ), and performance qualification (PQ) reports. Data integrity safeguards align with FDA 21 CFR Part 11 requirements, including electronic signature support, user access levels, and immutable audit trails for method changes, run logs, and diagnostic events.

Software & Data Management

Controlled via TekLink™ software (v4.5+), the Velocity XPT supports method-driven operation with customizable sequence templates, automated calibration bracketing, and integrated QC flagging (e.g., breakthrough detection, trap desorption efficiency). Raw data export conforms to ASTM E1947-compliant .csv and .txt formats; instrument metadata (gas flows, temperatures, valve timing) is embedded in each run file. Software licensing is perpetual and transferable upon refurbishment certification. Remote monitoring via secure VPN is supported, and all units ship with full digital documentation—including electrical schematics, maintenance logs, and traceable calibration certificates.

Applications

• Regulatory environmental testing: VOC analysis in drinking water per EPA 524.2 and wastewater per EPA 624
• Soil vapor intrusion assessment using EPA Method 8260D
• Pharmaceutical residual solvent quantification (ICH Q3C) in aqueous drug products
• Food and beverage safety screening for chlorinated solvents and benzene derivatives
• Research applications requiring high-throughput VOC profiling in biogas, fermentation broths, and polymer leachates

FAQ

Is this unit eligible for OEM service contracts after purchase?
Yes—refurbished Velocity XPT systems retain full eligibility for Tekmar’s extended service plans, including Preventive Maintenance Agreements (PMAs) and Priority Response Support.
What documentation accompanies the instrument?
Each unit ships with a Certificate of Refurbishment, IQ/OQ/PQ summary report, calibration verification records, firmware version log, and complete electronic user manuals.
Can the system be integrated with third-party GC platforms?
Yes—standard GC interface protocols (TTL triggers, analog voltage signals, and GC-ready status handshake) ensure plug-and-play compatibility with Agilent, Thermo Fisher, Shimadzu, and PerkinElmer GC systems.
Does the 1-year warranty cover consumables?
The warranty covers all non-consumable components (valves, heaters, coolers, electronics); traps, O-rings, and frits are classified as consumables and excluded per standard industry practice.
Are method transfer files available for common EPA methods?
Pre-validated method templates for EPA 502.2, 524.2, 624, and 8260D are included in the shipped TekLink software package and can be exported/imported across instruments.