To provide a measurement method of an electric conductivity of vapor for cleaning capable of accurately and easily measuring an electric conductivity of vapor for cleaning delivered from a delivery distal end of a vapor cleaning apparatus.
The measurement method of the electric conductivity of the vapor for cleaning is a measurement method of the electric conductivity of the vapor for cleaning delivered from the delivery distal end of the cleaning apparatus for vapor-cleaning an object to be cleaned, and includes a step (ST301) for mounting a storage unit for storing the vapor for cleaning to the delivery distal end of the cleaning apparatus, a step (ST303) for storing the vapor for cleaning delivered from the delivery distal end of the cleaning apparatus in the storage unit, a step (ST304) for cooling the vapor for cleaning stored in the storage unit to liquefy it, and a step (ST306) for measuring the electric conductivity of a condensate of the vapor for cleaning.
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