CFR Engines Inc. Cetane Rating Unit, Model F5

The CFR F5 Cetane Rating Unit is the globally accepted standard for determining and certifying the ignition quality of diesel fuels. First introduced in 1938, the CFR F5 today continues to be recognized as the industry gold standard for obtaining cetane numbers and against which all other methods are referenced.

ASTM D613: Standard Test Method for Cetane Number of Diesel Fuel Oil
EN ISO 5165: Determination of the Ignition Quality of Diesel Fuels - Cetane Engine Method

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