Reagent storage container comprising a sampling passage with improved sealing

An assembly for storing and sampling a reagent, comprising:

• a container for storing a reagent, the container comprising:
• a reagent storage space, said reagent storage space comprising a flexible bag,
• a passage having a first end opening out outside the container and a second end opening out in the reagent storage space,
• a chimney traversed by the passage, said chimney extending inside the reagent storage space between an upper part and a lower end, the upper part of the chimney being secured to the reagent storage space,
• a sampling device configured to be inserted at least partly into the passage the first end to access the reagent storage space,
• the container further comprising:
• a deformable partition having a closed position wherein the deformable partition closes off the passage when said partition is not mechanically stressed, and which is able to be stressed by the sampling device towards an open position wherein the passage is open, wherein the deformable partition returns to the closed position when the deformable partition is no longer mechanically stressed,
• a seal disposed in the passage, said seal comprising an elastically deformable rim defining an orifice adapted to receive part of the sampling device, said elastically deformable rim being adapted to
• pass from a relaxed state to a deformed state when the sampling device is inserted in the orifice,
• adhere to outer walls of the sampling device to seal the orifice when the sampling device is in the orifice,
• pass from the deformed state to the relaxed state when the sampling device is withdrawn from the orifice,
• wherein the seal and the deformable partition are positioned on the lower end of the chimney.