Interfering elements like Si, Ca, Cl, Fe and water are commonly present in crude oil and will settle to the bottom of a sample over time. These interferences can absorb the X-ray signal and reduce the concentration of sulfur reported. To prevent biased results, many laboratories centrifuge all crude oil samples prior to analysis by traditional D4294 instruments. This increases the amount of processing and time it takes to perform the measurement. Download our whitepaper to learn about a new solution that eliminates the matrix effects altogether, and offers a more efficient process compared to centrifuge pretreatment.