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Introduction to Remote Sampling
One of the unique features of the Model 3200
Thermal Desorption system is it's ability to perform automated exposure
of the tube adsorbents to a number of sample streams.
This sampling step, the 1st step of the
Texas2Step, is not offered by any other commercially available thermal
desorption system. In those systems, all sampling must be
performed "off-line" and the exposed tubes brought into the laboratory
for desorption and analysis.
The pneumatics system available in the
CombiPAL autosampler allows the TD tube to be:
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Moved to a sampling location.
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Attached to a sampling interface.
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A precise, measured flow pulled through the
TD tube for a fixed time.
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Tube removed from the sampling location and
replaced in a sample tray.
Sampling systems are custom built to user specifications.
Please contact
sales
at Microanalytics for more information.
Remote sampling may be accomplished in two ways.
Remote Location Sampling
This sampling scenario is ideal for agricultural or
petrochemical sampling, where atmospheric or headspace samples are collected on
a timed basis, and then returned to the laboratory for analysis. This
remote sampling system would consist of:
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Leap Technologies RePAL/DI.PAL
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Sample Tray(s) for unexposed and exposed TD tubes
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Sample Interface, e.g., flow-through cell
In Lab Sampling and Analysis
In-Lab sampling for aroma and malodor analysis is
enhanced by large sample sizes. For instance, headspace sampling of beer
is typically done with a full 12 oz. sample (one bottle/can). We
manufacture custom sample trays for the CombiPAL robotics unit, which allow
relatively large samples to be headspace sampled with TD tubes.
The resulting exposed tube can be stored in a sample
tray for later analysis, or moved to the inlet for desorption and analysis.
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