Device for collecting micro-samples of a fluid in the liquid state contained in a container

This device allows the collection of micro-samples of a fluid in the liquid state contained in a container. It comprises: - a chamber (23) connected to the container by a fitting (21); - a valve (22) which can adopt an open position to allow fluid communication between the chamber (23) and the container via said connector (21) and a closed position to prevent said communication; - a movable piston (7) adapted to pressurize the fluid contained in said chamber (23) when said valve is in closed position; and - a sampler (27) comprising: - a capillary tube (5) opening into the chamber (23); and - a drive circuit (2, 3) of a carrier gas whose pressure is lower than the fluid pressure in the liquid state in said chamber (23) when the latter is pressurized by said piston (7) .