Chemical liquid application apparatus and viscosity adjustment bottle

A chemical liquid application apparatus comprising:

• a processing unit which applies a chemical liquid to a substrate;
• a chemical liquid supply unit that is capable of connecting a supply source of the chemical liquid;
• a diluent supply unit that is capable of connecting a supply source of a diluent diluting the chemical liquid;
• a viscosity adjustment unit including a viscosity adjustment bottle attachment unit to which a viscosity adjustment bottle is attachable, the chemical liquid being supplied from the chemical liquid supply unit to the viscosity adjustment bottle, the diluent being supplied from the diluent supply unit to the viscosity adjustment bottle, the viscosity adjustment bottle mixing the chemical liquid and the diluent;
• and
• a mixture supply unit which supplies a mixture of the chemical liquid and the diluent to the processing unit, wherein
• the viscosity adjustment bottle attachment unit includes
• a first outflow port which outflows the chemical liquid to the viscosity adjustment bottle,
• a second outflow port which outflows the diluent diluting the chemical liquid to the viscosity adjustment bottle, and
• an inflow port into which the mixture of the chemical liquid and the diluent flows from the viscosity adjustment bottle.

A viscosity adjustment bottle that is attachable to a chemical liquid application apparatus applying a chemical liquid to a substrate, the viscosity adjustment bottle comprising:

• a first introduction port into which the chemical liquid is introduced;
• a second introduction port into which a diluent diluting the chemical liquid is introduced;
• a porous body which is connected to the first and second introduction ports and includes a plurality of holes through which the chemical liquid introduced from the first introduction port and the diluent introduced from the second introduction port flow, and
• a discharge port which is connected to the porous body and from which a mixture of the chemical liquid and the diluent is discharged.