Liquid agent container

A liquid agent container comprising:

• a main unit having a mouth, and deformable by a pressure exerted to press said main unit, and recovering an original form in geometry when said main unit is liberated from the pressure;
• a cap provided with a liquid agent discharging path for discharging a liquid agent and an air introducing path for introducing air, and attached to said main unit at said mouth;
• a hydrophilic filter provided at a bottom surface of said cap;
• an intermediate member having a tube projecting toward an interior of said main unit, said intermediate member being provided with a liquid agent introducing path provided internal to said tube and communicating with said liquid agent discharging path via said hydrophilic filter provided between said cap and said intermediate member, and an air supplying path communicating with said air introducing path, said intermediate member being located at an internal side of said cap, an outer peripheral surface of the tube being provided with an air vent groove extending along said liquid agent discharging path;
• a filter;
• and
• an internal stopper having an annular valve configuring a check valve having an inner circumferential surface in contact with an outer circumferential surface of said tube and passing air only in a direction toward the interior of said main unit, said internal stopper being provided with an air delivering path communicating with said air supplying path via said filter and communicating with the interior of said main unit via said check valve, said internal stopper being located at an internal side of said intermediate member,
• wherein said filter is attached to a bottom surface of said intermediate member, such that a center of the filter is offset from a center of said intermediate member, and said filter is provided between said intermediate member and said internal stopper, and
• said internal stopper has an outer circumferential flange, and the outer circumferential flange of the internal stopper and an outer circumferential portion of the intermediate member are stacked and sandwiched between an end surface of the mouth of the main unit and the cap.