• TestingCrude oil and petroleum productsMotor gasolines and gasoline fractions

    Motor gasolines and gasoline fractions

    Tests of motor gasolines according to STN EN 228

    Octane number using the research method
    Octane number using the engine method
    Lead content
    Density at 15 °C
    Sulfur content
    Oxidizing stability (inductive period)
    Content of resin compounds (after flushing)
    Corrosion on a copper plate (3 h at 50 °C)
    Hydrocarbon groups content
    - aromates
    - olefins
    Benzene content
    Oxygen content
    Organic oxygenates content
    - methanol
    - ethanol
    - isopropyl alcohol
    - isobutyl alcohol
    - tert-isobutyl alcohol
    - ethers (5 or more carbon atoms)
    - other oxygenates
    Vapor pressure
    Distillation test

    Supplementary/Recommended methods for determination of properties of motor gasolines and gasoline fractions

    Organic oxygenates content:
    - methanol
    - MTBE
    - ETBE
    - Other ethers (5 or more carbon atoms)
    Determination of hydrocarbon groups of gasolines and similar mixtures using the multidimensional GC
    (n-alcanes, iso-alcanes, cyclanes, olefins, cycloolefins, aromates, oxygenates)
    Anti-corrosion properties
    Interaction of fuel with water (demulsifying test)
    Potassium content
    Alkaline elements content
    Determination of aromates C6 to C10
    Mercaptan sulfur and hydrogen sulphide sulfur
    Motor gasolines and gasoline fractions using GC method
    Lubricity (wed1,4) at 25 °C
    Evaporation residue
    Content of resin compounds (non-flashed)
    Doctor test
    MTBE analysis using the gas chromatography (GC)