Device for diluting a viscous substance

A device for diluting a viscous substance, comprising:

• (i) a base body having a treatment chamber to be supplied with a viscous substance and a diluent for diluting the viscous substance;
• (ii) a surface element disposed in the treatment chamber of the base body and having a coating surface to be attached by the viscous substance supplied to the treatment chamber of the base body;
• (iii) a coating element having a movable member disposed in the treatment chamber of the base body and being movable along the coating surface of the surface element, and a coating portion disposed on the movable member and mechanically spreading the viscous substance attached to the coating surface of the surface element on the coating surface of the surface element in association with movement of the movable member to increase area of the viscous substance;
• and
• (iv) a scooping element disposed in the treatment chamber of the base body and scooping the viscous substance reserved in a bottom portion of the treatment chamber and dropping the scooped viscous substance onto the coating surface of the surface element.