Patent ID: 11890613
Assignee: GOLD STANDARD DIAGNOSTICS MILLIDROP
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 10:
11. A drop recovery method comprising the following steps:
introducing and circulating a working fluid into a circulation conduit comprising an outlet, the working fluid comprising a plurality of pockets, each pocket comprising a carrier fluid and a pocket containing a drop of internal fluid, the internal fluid being immiscible with the carrier fluid, each pocket being isolated from the following pocket by a separator, each separator being made up of a separator fluid that is immiscible with the carrier fluid,
recovering at least one pocket, in at least one compartment of a recovery substrate including several compartments, said compartment being placed opposite the outlet of the circulation conduit,
the relative displacement of the substrate with respect to the circulation conduit, so as to successively place the outlet of the conduit opposite at least two different compartments of the substrate,
wherein
the circulation conduit comprises a tube defining a part thereof for the working fluid, the tube emerging on an open mouth at the outlet of the circulation conduit, the tube comprising an outer wall;
the tube is placed in a through passage of a nozzle, and
the circulation conduit is substantially vertical at the outlet, and, wherein the method further comprises:
the preparation of the distribution of the pockets comprising:
a preparation device connected to the circulation conduit for receiving the working fluid having said plurality of pockets and said separator fluid therein, said preparation device injecting into the circulation conduit an additional volume of separator fluid, and
injecting into the circulation conduit an additional volume of carrier fluid,
the preparation of the distribution of the pockets being such that the volume of at least one separator is greater than or equal to a critical separation volume and the volume of at least one bubble formed by a pocket and a part of said separator is greater than or equal to a critical detachment volume.