Method for measuring a degree of homogeneity of oils using reverse titration and measuring apparatus using the same

An apparatus for measuring miscibility in oil using back titration, the apparatus comprising:

• a flocculation solution storage unit;
• a flow cell comprising a UV transmitting member;
• a dissolving agent storage unit:
• a UV irradiation unit configured to irradiate the UV transmitting member with UV light;
• and
• a measurement unit, wherein:
• a flocculation solution in which at least one of wax and asphaltene components of the oil is precipitated by a flocculant is stored in the flocculation solution storage unit;
• the flocculation solution circulates between the flocculation solution storage unit and the flow cell;
• the measurement unit measures a UV transmittance of the flocculation solution while the dissolving agent stored in the dissolving agent storage unit is supplied to the flocculation solution storage unit;
• the miscibility in the oil is calculated from an amount of dissolving agent supplied and a change in the UV transmittance measured by the measurement unit;
• and
• the miscibility is calculated based on a time point at which a slope of increase in the UV transmittance changes.