Velocity XPT is more than a next-generation Purge and Trap system, it's a revolutionary leap in technology. Advancements in Velocity XPT ensure the highest throughput with the least amount of downtime. From cutting sample cycle time nearly in half, to built-in intelligent diagnostics, Velocity XPT is the most productive Purge and Trap available today.

With the Velocity XPT, you increase the sample throughput up to 100%. This nearly double sample throughput and increases the profitability of your VOC lab without the cost of an additional GC system. Patent-pending Accelerated Purge and Trap technology lets you independently control the flow rate during all modes, greatly reducing dry purge and bake times. Velocity XPT also provides a 25% reduction in trap cool down time after bake mode.

Forward Focusing Chamber:
This patent-pending technology provides the highest resolution chromatography and superior peak shape for early eluting gases. By placing an expansion chamber after the trap during the desorption modes, analytes are focused into a tight band. When analytes are tightly focused prior to desorption into the GC, dramatic improvements in chromatography resolution are evident. The FFC also efficiently desorbs which greatly reduces carryover from run to run.

Exceptional Inertness:
Silcosteel tubing and Silcosteel-treated fittings throughout the sample pathway prevent loss of active, polar, and high-boiling compounds, and also resists corrosion.

With the simple setup and accurate control, you save time by entering all parameters electronically with Electronic Flow Control where flow and pressure parameters remain precisely the same and are constantly monitored for accurate and reproducible results.

Automatic Leak Check, Electronic Pressure Monitor:
With intelligent diagnostics, Velocity XPT quickly and simply checks itself for leaks. If a leak is detected, system diagnostics help you isolate and pinpoint leaks. The Electronic Pressure Monitor uses a pre-set over pressure limit to identify potential pressure build ups and will shut itself down before damage can occur.

The Guardian Foam Sensor option is a set of built-in photodiode-based sensors. If foam or liquid is detected at the top of the glassware, purge gas shuts down, the vent valve closes, and the sample drains. Guardian can be configured to automatically add an anti-foaming agent to the sample, allowing purge to continue and without re-running the sample.*

VOC TekLink software comes standard and gives you the versatility needed to control both Velocity XPT and Tekmar autosamplers. The built-in Internet-based status alert system ensures that you will always know the status of your purge and trap system, even when you're not in the laboratory. The new Method Development Wizard generates an optimized method for traditional EPA purge and trap protocols based on your method requirements.

Velocity XPT comes with a free firmware upgrade for your Tekmar vial autosamplers (AQUATek 70 and SOLATek 72) and ensures that your autosampler fully leverages new features like productivity-boosting accelerated purge and trap cycle time. If an error occurs, run the TekLink Benchmark Test to automatically verify all critical electrical and mechanical components and quickly isolate problems and troubleshoot. Other enhancements include a new modular valve manifold system and power output LEDs that eliminate the need to use a voltmeter.