Product category:
Non-contact, Optical and Laser
News Release from: Aspectrics | Subject: Application note
Edited by the Manufacturingtalk Editorial
Team on 02 April 2007
Application note for EP-NIR spectroscopy
Aspectrics has produced an application note showing that its MultiComponent 2750 EP-NIR analyser achieves simultaneous measurement of water, methanol and total glycerin in B100 biodiesel samples.
Aspectrics the provider of patented Encoded Photometric Near Infrared (EP-NIR) spectroscopy technology, has produced an application note showing that its groundbreaking MultiComponent 2750 EP-NIR analyser achieves precise, simultaneous measurement of water, methanol and total glycerin in B100 biodiesel samples US and European regulations define the maximum allowable concentrations of contaminants in B100 biodiesel finished product
This article was originally published on Manufacturingtalk on 29 Jan 2007 at 8.00am (UK)
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NIR analyser precisely measures ethanol in water
Aspectrics has introduced an application note detailing methods for MultiComponent 2750 EP-NIR analyser achieving precise measurement of water in ethanol when concentrations are 90% or greater.
The cost of sending non-compliant samples for third party laboratory testing can be as high as $1200/sample so pre-screening the samples using the Aspectrics EP-NIR analyser eliminates non-compliant samples and achieves significant cost savings for biodiesel producers.
The application note shows that the Aspectrics MultiComponent 2750 EP-NIR analyser is a fast, non-destructive and cost-effective B100 quality control tool, when used in conjunction with an external halogen NIR source and an extended range 2mm pathlength process transmission probe.
The application note entitled "Simultaneous Measurement of Water, Methanol and Total Glycerin in Biodiesel Synthetic Samples Using a MC2750 EP-NIR Spectrometer" is available to download free-of-charge online.
Further reading
Analyser provides exact measurements of biodiesel
Aspectrics has introduced an application note demonstrating the ability of its MultiComponent 2750 EP-NIR analyser to provide accurate measurements of biodiesel in B0 to B100 diesel blends.
Encoded photometric infrared spectroscopy disk
Aspectrics has announced the receipt of a fifth US patent for its Encoded Photometric Infrared Spectroscopy disk technology and associated optics.
Biodiesel synthetic samples were prepared using an orthogonal experimental design in order to achieve maximum variability of B100 composition, with a minimum number of calibration standards.
All samples were analysed in 4 replicates and calibration models using PLS1, PLS2 and PCR were developed using Thermo Scientific Grams AI 8.0 software.
With regards to the measurement of water in B100, best analytical results were obtained using the PCR algorithmic approach while the PLS1 algorithmic approach was proven best for measuring methanol and glycerin.
The method achieved 95% accuracy in all measurements.
Furthermore, from a chemometrics viewpoint, it appeared that the pre-processing of the absorbance spectra had much more impact on improving the accuracy of measurement than switching from one multivariate algorithmic approach to the other.
Aspectrics' EP-NIR analyser offers a breakthrough in NIR analysis, facilitating ultra-fast scanning operation capable of acquiring an impressive 100 scans/second, resulting in high sample throughput, real-time quality control monitoring and extreme sensitivity through spectral averaging.
The novel MultiComponent 2750 analyser covers an unprecedented spectral range of 1375-2750nm, allowing users access to information rich combination bands between 1950nm and 2750nm.
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