The fluid container (16) it has, bi- Als et. al receptacle (12) installs and the fluid container (16) with the aforementioned receptacle (12) with the balanced pressure device which makes the balanced pressure between possible (10) it is. The balanced pressure device (10), when the balanced pressure device (10) the receptacle (12) installing, in order the fluid container (16) to offer the fluid communication to inside or outside, the passage which is arranged (18) it has. The balanced pressure device (10), furthermore, the fluid entrance (20) through, as the fluid the fluid container (16) to inside makes that it flows possible, the fluid entrance (20) through, when the fluid the fluid container (16) the unidirectional valve which prevents the fact that it flows (28) the fluid entrance which is included (20) with, the filter (34) including to outside, the fluid container (16) in order to become filtration possible, the filter receipt expedient which is arranged (30) with it has the fluid which flows to inside or outside.流体容器(16)を備え、バイアル等のレセプタクル(12)に取り付けて流体容器(16)と前記レセプタクル(12)との間の均圧を可能にする均圧装置(10)である。均圧装置(10)は、均圧装置(10)をレセプタクル(12)に取り付けた時に、流体容器(16)内部又は外部への流体連通を提供するように配置された流路(18)を備える。均圧装置(10)は、更に、流体入口(20)を介して流体が流体容器(16)内部へ流動することを可能にすると共に流体入口(20)を介して流体が流体容器(16)外部へ流動することを防止する一方向弁(28)を含む流体入口(20)と、フィルタ(34)を含む時に流体容器(16)内部又は外部へ流動する流体を濾過可能となるように配置されたフィルタ収納手段(30)とを備える。
