We have been accompanying the automotive industry for decades, for example with residual dirt analyses (according to VDA 19) or with determining the residual amount of flux in aluminium-based heat exchangers. Our expertise in method development helps you meet the challenges of new technical specifications.
The requirements for particulate residual dirt analyses are diverse these days. We offer you decay measurements to qualify a process as well as the estimation of degrees of hardnes using scanning electron microscopy. The standard method for light-optical counting and differentiation of metallic and non-metallic particles has become a separate sub-area for us through constant further development.
Light optical particle analysis (JOMESA)
Particles are measured and counted on filters by a digital camera in a fully-automated optical microscope. Polarized light is used to discriminate between metallic and non-metallic particles.
A typical relative measurement uncertainty is ±10%.
Scanning Electron Microscopy with Energy Dispersive X-Ray according to DIN ISO 22309:2015-11 SEM-EDS
[accredited method: PL-19422-01]
Microbeam analysis – Quantitative analysis using energy-dispersive spectrometry (EDS) for elements with an atomic number of 11 (Na) or above. Good results will be obtained for mass fractions down to 1%. SEM-EDS is the standard method for surface and particle analysis. Single particles can be inspected and identified on the basis of the emitted X-Ray spectra.
A typical relative measurement uncertainty for quantitative analyses is ±10%.
We will be happy to identify and quantify filmic residues for you using gas chromatography and infrared spectroscopy.
Gas Chromatography coupled with Mass Spectrometry GC-MS
Ph.Eur. 10,2.2.28 - Gas Chromatography [accredited method: PL-19422-01]
This is the most sensitive method to analyze single components in complex mixtures. But only organic substances which can be vaporized without decomposition can be analyzed.
Organic compounds generate so called mass spectra. To identify unknown compounds the mass spectra will be compared with the NIST library in a current issue. This comprehensive library is the world’s most widely used mass spectral reference library with more than 240.000 entries.
A typical relative measurement uncertainty is ±10%.
Gas chromatography coupled with Flame Ionization Detector GC-FID
Ph. Eur. 10, 2.2.28 – Gas Chromatography [accredited method: PL-19422-01]
This is the most sensitive method to analyze known components in complex mixtures. The high linearity provided by the FID in this system makes it suitable for quantitative work.
A typical relative measurement uncertainty is ±10%.
Infrared Spectroscopy FT-IR
Ph. Eur. 10, 2.2.24 – Infrared spectroscopy [accredited method: PL-19422-01]
The best known and most widely used method for the analysis of organic compounds. After excitation with an IR source, each functional group in a molecule absorbs energy at distinguished frequencies. The spectra obtained are additive, from summation of individual components. Therefore, single components under 1% of the total cannot be detected with certainty.
A typical relative measurement uncertainty for quantitative analyses is ±10%.
Thanks to our wide range of examination methods, we are ideally equipped for requalification measurements on a wide variety of components and materials. We measure filler content on plastics as well as layer thicknesses on metallic components.
Contact us:
+49 7451 55703 0
info@sashagmann.de
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