Euro-4 Gasoline Indices Improve

Euro-4 Gasoline Indices Improve Euro-4 Gasoline Indices Improve

Euro-4 gasoline indexes are regularly checked to ensure they do not violate international standard levels, director of the Comprehensive Monitoring Office at the Department of Environment said.
"The critical factors, namely octane number, aromatic compounds, olefin, sulfur and benzene, should stand at 91, 35%, 18%, less than 50 parts per million and less than 1% respectively, most of which show improvement in domestically produced gasoline," Shina Ansari was also quoted as saying by Shana. 
An octane rating, or octane number, is a standard measure of the performance of an engine or aviation fuel. The higher the octane number, the better the quality of fuel.
Pointing to recent improvements in meeting standard criteria, she said, "As of October 2017, gas stations have been monitored randomly in Tehran Province and compared to previous years, the level of aromatic compounds as well as benzene has decreased notably."
"In line with efforts to protect the environment, so far, some 50 random samples from different filling stations have been scrutinized, which will reach 100 by the end of the current fiscal [March 20]," she added.


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