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ramonporohjen Может в частях на миллион.. PPM?
•Effective 1994.10, a maximum sulfur limit of 0.2% (wt.) was introduced for all gas oils, including diesel fuel. The minimum cetane number was 49.
•1996.10: A maximum sulfur limit of 0.05% (wt.) = 500 ppm for diesel fuel.
•2000.01: A maximum sulfur limit of 350 ppm and cetane number of 51 for diesel fuel.
•2005.01: A maximum sulfur limit of 50 ppm for diesel fuel for highway vehicles. “Sulfur-free” 10 ppm sulfur diesel fuel must be available.
•2009.01: A maximum sulfur limit of 10 ppm (“sulfur-free”) for diesel fuel for highway vehicles.
Sulfur content in fuels for mobile nonroad vehicles—including mobile machinery, agricultural and forestry tractors, as well as inland waterway vessels and recreational craft—is limited at 1000 ppm from 2008, and at 10 mg/kg from 2011 (certain flexibilities apply).