Product (455)

Expertise/Lubricating oils according to ASTM D6443 and D4927

Almost all commercial oils contain chemical additives to enhance their performance for a particular application. ASTM D6443 and ASTM D4927 international standard test methods are used to determine if the oils, additives, and additive packages meet specification. These methods employ wavelength dispersive X-ray spectroscopy (WDXRF) and mathematical matrix corrections procedures. XRF is an excellent method for multi-elemental analysis. It produces fast, cost-effective, precise and accurate data. Data can be used for quality control, product development and product performance classification. XRF provides very stable data. Thanks to the integral smart monitor program, individual calibrations can be used for months, avoiding time-consuming and costly re-standardization. Automated analysis reduces measurement times to six minutes and efficient sample preparation methods support analysis rates of ten samples per hour. User-friendly software allows routine analysis to be carried out by factory operators.

Expertise/Sulfur in petroleum products according to ISO 20884 and ASTM 2622

Crude oil contains typically between 0.5 and 5 % sulfur. Environmental considerations require emissions from petroleum products derived from these crude oils to contain limited levels of sulfur. The sulfur content of both intermediary and end-products (fuels, oils, gasolines) needs to be accurately controlled according to test methods such as ASTM 2622 and ISO20884. These employ wavelength dispersive X-ray spectroscopy (WDXRF) and mathematical matrix corrections procedures. XRF is an excellent method for determination of sulfur in petroleum products. It produces fast, cost-effective, precise and accurate data. Data can be used for quality control, product development and product performance classification. XRF provides very stable data. Thanks to the integral smart monitor program individual calibrations can be used for months, avoiding time-consuming and costly re-standardization. Automated analysis reduces measurement times down to two minutes and efficient sample preparation methods support analysis rates of more than ten samples per hour. User-friendly software allows routine analysis to be carried out by factory operators.

Oil-Trace/Features

The matrix of a liquid can contain compounds that cannot be not measured by XRF (e.g. -CH2-, -CHOOCH2- or -CH2OCH2-). The matrix effects of these compounds, however, are very different and influence the accuracy. For an accurate analysis of elements like sulfur the determination of these compounds is crucial. These compounds have a high influence on the Compton scattered tube intensity. For this reason the FP model is extended with a model to calculate the theoretical intensity of scattered tube intensity. Oil-Trace exploits this advanced FP model to correct for the influence of these compounds, resulting in increased accuracy for elements like Mg, Al, Si, S and P.