Metrohm NIRS XDS RapidContent Analyzer - Manual (Page 28)

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5
Rapid Content Module
The XDS Rapid Content Analyzer is designed for sampling of many types of customer samples. This
section covers use of the sample cell, use of the moving sampling mechanism, and spot size
adjustment.
5.1 Sample Cell
The sample cell operates in a horizontal orientation, to avoid spills of powder or pellets into the
sampling chamber. The purpose of this cell is to expose a large amount of surface area (of the
sample) to the instrument. These purposes are served:
• Material with unusual shapes, texture, and voids are scanned more thoroughly. This gives a
more representative spectrum of the material than a small scan would provide.
• Large, flat materials may be scanned in the sample cell. This includes films, fibers, textiles, and
carpet.
The sample cell is shown with powders and finely-chopped polymer pellets. Many materials have
internal voids or spaces, and this cell permits averaging over maximum surface area to minimize the
effects of the texture, gaps or packing inconsistencies.
The cell is automatically moved into position, and incremented to the next position, by the sample
transport mechanism. Depending upon scans set in the Data Collection Method (DCM) the sample
cell will be moved through 8 distinct positions, exposing the maximum sample area to the
instrument.
Always follow these guidelines when using the sample cell:
1. Always use appropriate safety equipment with hazardous materials, to prevent injury. This
equipment may include safety glasses, gloves, lab apron, and fume hood. Always check the
MSDS (Material Safety Data Sheet) for the materials being analyzed for recommended handling
precautions.