The aniline point of an oil is defined as the minimum temperature at which equal volumes of aniline and the oil are miscible, i.e. form a single phase upon mixing. For aniline point and mixed aniline point determinations according to Method stirring aniline-sample mixture in a borosilicate glass thin film tube suspended in a heating bath. Thin film of mixture flows over a light well illuminated by a variable 6V lamp. Adjust heating rate per specifications using accessory power control Heater. When lamp filament brightens inside well, allow mixture to cool unit the two phases separate as indicated by obscuring of the amp filament. Consists of thin film tube;400ml RASAYAN beaker; cover assembly with bath stirrer, sample pump rotor and cooling coil; 6V lamp with line cord; and drive motor, positive drive pulley system rotates sample and bath stirrers. Accessory Power control Heater has variable step less control and a reference dial for repeatable control of heating rate. Porcelain refractory top plate shields 750 W heater and has a positioning well for the pyrex.