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| Sampling Considerations for the Measurement of a UV Stabilizer in Polymer Pellets Using FT-NIR Spectroscopy (AN50790) |
| Abstract: FT-NIR measurements representing the bulk sample. |
| For heterogeneous samples such as polymer pellets, it is critical to obtain a measurement that is representative of the bulk sample and not just a small fraction of the material. This is often a significant challenge when using traditional near-infrared spectroscopy sampling methods. Accessories such as the Sample Cup Spinner allow a greater amount of material to be analyzed in an automated device. In this study, two diffuse reflectance-sampling methods were compared to determine the most efficient and accurate method for sampling polystyrene pellets.
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