Due to the high transparency of optical glass, any smallest inhomogeneity becomes immediately visible. A point defect or streak that occurred during the production process requires rapid clarification of the cause of the defect. A laser microscope with a coupled ESA4000^plus makes measuring these defects easy and fast delivers high spatial resolution. To do so, a simple semi-quantitative analysis is usually sufficient.

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The high performance of our ESA4000^plus spectrograph is underscored by particular applications such as the analysis of steel, hard metal, aluminium, or precious metal alloys. Almost every chemical element can thus be detected in just one measurement step. The limits of detection extend into the ppm range, which allows for both the rapid detection of local inhomogeneities on the sample surface and the recording of depth profiles.

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Due to changing environmental and living conditions as well as a change in people’s diets, there is a growing interest in knowing the specific mineral composition of food. From a nutritional point of view, the micronutrients content, including iron, zinc, manganese, and copper, as well as monitoring of limits for heavy metal are particularly interesting, in addition to the phosphorus-calcium ratio. Compared to the classical ash content measurement, which only allows for a relative statement about the total mineral content and requires long analysis times, the laser plasma analysis using our ESA4000^plus spectrographs opens up new ways for the quality control and assessment of feed and food.