Washcloth containing cleansing agent
PROBLEM TO BE SOLVED: To make the subject method and apparatus applicable to a raw material with poor heat resistance such as a soft lens and to obtain high sterilization effect by a method wherein a deformable container made of a plastic in which an ophthalmic medical tool is hermetically sealed is stored in a pressure container and is hermetically sealed by filling a freezing medium under liq. condition and it is cooled at a specified temp. SOLUTION: A water-contg. soft lens is put in a container 28 (or a bag) made of a plastic and the container is filled with a filling liq. to evacuate air and is hermetically sealed. Then, after the container 28 is stored in a pressure container main body 10, a freezing medium under liq. condition is poured in the pressure container main body 10 through a liq. inlet 12 and the freezing medium is filled in the pressure container main body 10 to evacuate air to enclose the liq. inlet 12 by a stopper 14. Then, these are placed in a freezer and are cooled down to a temp. of at most -20 deg.C. Then, high pressure is generated in the pressure container main body 10 and microorganisms such as bacteria sticked on the water-contg. soft lenz are eradicated by sterilization action of high pressure and low temp.