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Electrical semiconductor characterization
Luminescence dating, research, dosimetry and more
Free radical measurements in life science and biomedical applications
Our benchtop MiniScope (MS 5000) ESR spectrometer is a research grade device with sensitivity and reliability for demanding...
Industry standard for evaluating irradiation doses on alanine tablets
Nitric oxide measurement, reactive oxygen species, oxidative stress, radical generating systems, photo dynamic therapy
Analysis of chemical structure of paramagnetic centers and their orientation within a crystal
Bioinorganic transition metal compounds, fenton chemistry, effect of heavy metal ions on livving tissue
Variety of free radicals in environmental applications can be evaluated by EPR spectroscopy
Living polymers, nitroxide quantification, radicals in varnish, UV stability of scratch resistant varnish
ESRStudio is a dynamic and user friendly software for ESR measurements with some of the most modern and fluent workflow based...
Magnettech GmbH was founded in 1991 by the members of the department of "Centre for Construction of Scientific Devices"...
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Chemical polymerisation may have a reaction mechanism involving radicals. Well known in the common laboratory practice is the preparation of polyacryl-amide gels for gel electrophoresis. The polymerisation of acrylamide is initiated either by addition of peroxodisulfate or by riboflavin and light. In both cases free radicals are generated which trigger the chain reaction. On the other hand, existing free radicals are able to interfere with or even interrupt such a process by electron pairing. In cases where polymerisation reactions are completely undesired, the addition of stable free radicals may serve as a chemical to inhibit such reactions.
As a consequence, the monitoring of the content of free radicals which may have been added as in-process inhibitors could be a valuable control instrument. The most common stable free radicals used for this purpose are nitroxyl compounds having a very characteristic ESR spectrum entailing three lines when dissolved in a liquid (Fig. 1). Automated evaluation is standard in the ESR evaluation software as well as predefined calibration curves for quantitative ESR measurements. For routine applications ESR autosampler are available for high ESR sample throughput.