Applications |
NIR spectroscopy has numerous applications in laboratory analysis and process control. Some typical examples are described below.
For more detailed information please contact your Polytec sales/application engineer.
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 Product and Application Overview
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Process Control of Biogas PlantsWithout an appropriate measurement technique, biogas plants are often run below capacity, in order to avoid instabilities in, and in extreme cases, failure of the fermentation process. The result is reduced energy output and possible operating losses. To achieve efficiency, reliable and precise measurement techniques are required, and automated process monitoring is required. With NIR probes, various process parameters can be quantified directly in the reaction vessel, and, thus, be used for process control. A lack or excess of certain components (e.g., acetic acid) has a strong impact on the fermentation process. But by monitoring and controlling concentration, optimal production efficiency can be achieved.
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 Process Control |
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Quality Control of Tablets, Capsules and Pharmaceutical SubstancesUsing fiber-optic probes, pharmaceuticals can be analyzed quickly and easily– even in the production facility. Due to the extremely high measurement speed of PSS systems, each and every capsule or tablet produced can have its active ingredient content verified, thus giving 100 % quality control.
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 Pharmaceutical Control |
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Quality Monitoring in the Food IndustryWater, fat and protein content determines cost and quality in food production. These parameters can be determined simply and quickly using Polytec’s NIR technology, allowing the corresponding production and processing steps to be controlled and optimized. As an example, the monitoring of the ethanol content in different beer brands can be determined by NIR spectroscopy.
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 Food Analysis |
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NIR – Process and Multi-Component Analysis in the Chemical IndustryUsing special probes connected directly to pipelines and reaction vessels, it is easy to monitor water, alcohol and total organic carbon. Quantitative determination of all components in a reaction is decisive for monitoring and controlling many processes. With the aid of suitable probes which are directly connected to extruders, reactors or pipelines, it is possible to determine important parameters (e.g. viscosity, density, composition) from the NIR spectra in real time.
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 Multi-Component-Analysis |
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NIR for Identifying PlasticsPolymers display characteristic spectra. Hence, identifying PE, PET, PP, PS, and so forth, is another area of application for NIR technology. High measurement speed, as well as confidence in identification, is the basis for industrial application in sorting and recycling facilities. During the production of polymers, quick and easy quality assurance regarding water content (for example), is made possibly by NIR spectroscopy.
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 Identifying Plastics |
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Determination of Layer ThicknessUsing NIR spectroscopy, layers ranging from 100 nm thick up to 100 μm can be measured without contact by the use of thin-film interference patterns. This holds true even for layers that are not transparent in the visible spectral range, e.g. lacquers.
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 Layer Thickness |
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Production Control for PaperNIR spectroscopy is highly suitable for in-line moisture control of paper rolls. In addition, a wide range of customer-specified applications or coatings can be monitored and controlled.
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 Control for Paper |
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Polytec GmbH • Polytec-Platz 1-7 • 76337 Waldbronn •
Germany
Tel.: +49 (0) 7243 604-0 • Fax: +49 (0) 7243 69944 • Postfach 161
http://www.polytec.de • info@polytec.de
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