To provide a method of producing a washing material capable of excellently and efficiently washing a substrate or the like.
A super-cooling liquid 1c obtained by cooling a raw material liquid such as water and a liquid mixture of water and an organic compound liquid having a lower solidifying point than water in super-cooling state is jetted through a super-cooling liquid jetting port 62 formed in one end of a washing material production container 5 to the washing material production container 5 to form a turbulent current region 53 of the super-cooling liquid 1c and a portion of the super-cooling liquid 1c jetted through the super-cooling liquid jetting port 62 is brought into contact with seed ice 93a generated in the washing material production container 5 to cause phase change of the ice particles and grow the ice particles by stirring them by the turbulent current in the turbulent current region 53 and thereby obtain a solid-liquid-coexisting washing material 1 in sherbet state that the ice particles and the liquid are co-present and the washing material 1 obtained in such a manner is discharged out of the washing material production container 5 to a washing material supply path 7 connected to the other end part.
YAMAMOTO TAKESHI
TADA MASUTA
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