D7996, Test Method for Measuring Visible Spectrum of Asphaltenes in Heavy Fuel Oils and Crude Oils by Spectroscopy in a Microfluidic Platform, will help to quickly detect contaminants in variety of petroleum products. Standard will cover gas oil, diesel fuel, fuel oils, residual fuel oils, lubricating oil, and bitumen, as well as crude oil that uses microfluidics and spectrographic techniques. Using the standard could reduce remediation costs and improve efficiency.