Abstract:
A freeze valve for a substantially single-phase fluid contains a pipe designed to receive fluid in a flow area, a cold source and a heat source. The cold source and the heat source are placed in thermal contact with the pipe. The pipe is positioned in relation to the cold source and the heat source in such a way so as to permit the freezing of fluid passing through the pipe, thereby closing the passage through the pipe, or the heating of the fluid, thereby opening the passage. The pipe contains, for example, a metallic material that is mechanically strong and capable of dissipating heat by the Joule effect.
Abstract:
An assembly for treating a sample in a liquid medium, in particular a biological material, includes an essentially static permanently active module, closed off by a chamber from the outside. The assembly includes a disposable outer container holding the sample to be treated, for example an inoculum of a cell culture. The disposable outer container can be connected to the main outlet of a treatment circuit. Another disposable outer container is provided for analyzing the nucleic fraction obtained in the treatment circuit. This container can be connected to the main outlet of the treatment circuit and comprises various reagents and means for analyzing the nucleic fraction. Constituents of the assembly can act as a heat source when connected to an electrical current.