Apparatus for automatically preparing solution of powdery product as specimen for use in viscosity measurement

An apparatus for preparing a solution of a powdery product having a predetermined concentration as a specimen for use in viscosity measurement, said apparatus comprising an electronic discharge-weighing device for determining the discharged amount of a powdery sample which is accommodated in a sample container, introduced into a hopper and discharged from the hopper by a vibration-generating drive unit;

• a dissolution container for receiving and dissolving the powdery sample from the hopper;
• an electronic balance for weighing the powdery sample in the dissolution container;
• a solvent supply source for injecting a solvent into the dissolution container containing the powdery sample;
• a device for heating and stirring the powdery sample and the solvent in the dissolution container;
• and a control circuit for controlling the electronic discharge-weighing device, the vibration-generating drive unit, the electronic balance, the solvent supply source and the heating and stirring device.