FIELD: chemistry.
SUBSTANCE: disclosed method of analysing ferromagnetic particles in oil involves successive exposure of the analysed sample to a magnetic field in different directions. The said magnetic field is constant. An alternating magnetic field whose parametres depend on differential magnetic permeability averaged in the volume of the oil is additionally applied in a fixed direction. Concentration of particles is determined from the difference between these parametres measured for different directions of the constant magnetic field.
EFFECT: selective analysis of irregularly shaped particles formed only as a result of friction.
3 cl, 2 dwg
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