Stratum PTC Purge and Trap Concentrator

Product catalog summary

Description
The Stratum Purge and Trap Concentrator (PTC) is a sample preparation instrument designed to extract Volatile Organic Compounds (VOCs) from aqueous and solid samples using Helium or Nitrogen. The VOCs are collected on a sorbent trap and then released into a Gas Chromatograph (GC) system. This method is widely used in EPA methodologies and other analytical applications requiring VOC concentration. Teledyne Tekmar has been a leader in this technology since the 1980s, continuously improving the system to meet evolving analytical challenges.

How It Works
The system extracts VOCs using a controlled flow, depositing them onto a sorbent trap, which is then heated and back flushed to a GC or GC/MS system. The Stratum PTC features advanced technology, including a patented electronic Mass Flow Controller (MFC) and intuitive software for system performance monitoring.

Modes and Requirements

Purge: Inert gas flows through the sample matrix to extract VOCs onto the trap. The efficiency is determined by the gas volume (flow rate x time).
Dry Purge: Removes excess water to prevent chromatographic interference.
Desorb Preheat/Desorb: The trap is heated to release compounds, which are then transferred to the GC system.
Bake: Heats the trap and increases system gas flow to prepare for the next run.

Options

Guardian Foam Sensor: Detects foaming and shuts off the purge flow.
Guardian and Eliminator: Adds antifoam agent when foam is detected.
Autosampler: Reduces manual labor and improves data quality.
Cryofocusing Module: Enhances chromatographic resolution.

Applications and Industries

Environmental
Pharmaceutical
Food and Beverage
Petrochemical
Forensics and Toxicology

Methods
Includes USEPA methods 502.1, 502.2, 524.2, 503.1, 601, 602, 603, 624, 8010, 8015, 8020, 8021, 8030, 8240, 8260, ASTM and Standard Methods, Massachusetts VPH and GRO Methods.

Features and Benefits

Mass Flow Controller: Allows programmable flow control for optimized performance.
Ease of Operation and Maintenance: Color-coded lines and well-organized components minimize downtime and operational costs.
Water Management: Optimized to reduce water transfer to the GC column.

Specifications

Cycle Time: 17 minutes with an 11-minute purge time.
Trap Furnace: Cools from 250°C to 40°C in 90 seconds.
Gas Requirements: 99.999% Helium or Nitrogen.
Dimensions: Height: 19.75 inches, Width: 8 inches, Depth: 18.5 inches.
Operating System: PC using Windows® XP or greater.

Service and Support
Teledyne Tekmar offers installation, training, and validation packages to ensure successful operation and compliance with specific methodologies. Their support network includes a fully staffed applications laboratory and technical professionals worldwide.

All Teledyne Tekmar catalogs and technical brochures

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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