NDT.net Feb 2006, Vol. 11 No.02

Three times a winner - Twin-XULS sets the standard

January 4, 2006 -- Oxford Instruments has recently completed the work necessary for the Twin-XULS to become the only benchtop XRF analyser to conform with an ASTM Method - D 7212, an Energy Institute method IP 351/05 and a reproducibility statement calculated by the US EPA. The Twin-XULS is a benchtop EDXRF spectrometer based on a unique, patented, low background proportional counter detector. Twin-XULS provides the low cost and simplicity of traditional EDXRF, and now has the low detection limits (1 mg/kg) required for the successful determination of sulfur in ULS fuels.

The ASTM and the Energy Institute ran a joint round robin exercise and determined the precision of the Twin-XULS method independently, with repeatability for the sulfur measurement at 10 mg/kg of 2 mg/kg, and reproducibility of 5 mg/kg. In 2005, the US EPA organised a separate round robin for the determination of sulfur in ULS diesel, to establish if current instrumentation is capable of meeting a reproducibility of 2 mg/kg at the regulatory 15 mg/kg sulfur level in diesel in the US. For this study, all laboratories and instrumentation had to first meet very strict long-term precision and accuracy criteria to be able to take part. The round robin gave outstanding results for the Twin-XULS, and a reproducibility of 1.94 mg/kg at 15 mg/kg sulfur was achieved, illustrating again that the precision and accuracy offered by the Twin-XULS makes it the only choice for ULS measurements. Notes to editors

About Oxford Instruments Industrial Analysis

OIIA offers a range of Analytical Instruments designed for demanding quality control applications. From materials analysis to thickness gauging, the Industrial Analysis products incorporate the latest in available technology, coupled with over 30 years of experience in designing, producing and supporting world class instruments.

Our X-MET handheld X-ray Fluorescence (XRF) analysers and ARC-MET mobiles Optical Emission (OES) analysers are specifically designed for positive material identification, alloy analysis and identification and X-METs for hazardous material analysis (RoHS).

Our Lab-X, Twin-X, ED2000 and MDX1000 XRF spectrometers span the price/performance range for routine chemical analysis. From Sulfur in petroleum products to the analysis of limestone, we can match exactly the correct spectrometer to your needs, as we have the broadest range available in the industry.

For thickness gauging applications we offer handheld magnetic and eddy current gauges to full function, high performance XR systems. Our recently introduced X-Strata960 provides world-class performance.

For further information, please contact
John Patterson at Oxford Instruments Analytical Inc. in the US.
Email: jihpatterson@earthlink.net
Tuija Nyberg, Marketing Communications Specialist
at Oxford Instruments Analytical Oy in Finland
Email: tuija.nyberg@oxinst.fi

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