To provide a stirrer having a stirring rotor free from a problem of corrosion even if used in reaction under an acidic condition, a reactor using the same and a semi-automatic synthesizing apparatus.
The stirrer has a container 2 and a stirring rotor 1 rotated by the action of a rotary magnetic field. The container 2 has a fixed shaft 23 vertically protruded from the center of the bottom part of the container 2 and the rotor 1 has a support comprising a yoke member 11 having downward vertical parts 11b and 11b provided to the side ends thereof and the cylindrical member 12 which is attached to the yoke member 11 and of which the lower end is opened in order to insert the fixed shaft 23 and the upper end of the fixed shaft 23 inserted in the cylindrical member 12 comes into contact with the upper end surface of the hole of the cylindrical member 12.
ITO KOREATSU
KANZAKI MUNEHIRO
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