| 主权项 |
1. An extraction system for distributing a test product in an extraction fluid, the system including:
a flow cell having walls defining an internal passageway having an extraction region for holding the test product and having an upstream end and a downstream end between which the extraction region extends; and a pump having an inlet in fluid communication with the downstream end and an outlet in fluid communication with the upstream end, the pump being configured to re-circulate extraction fluid from the downstream end back to the upstream end so as to progressively erode the test product and distribute the test product in the extraction fluid wherein the upstream end has an internal cross-sectional area, the downstream end has an internal cross-sectional area, the internal cross-sectional area of the upstream end being larger than the internal cross-sectional area of the downstream end and the extraction region tapering from the upstream end to the downstream end; wherein the flow cell and the pump are connected and sealed so as to form a pressurized system; and wherein, for the extraction region, the walls defining the internal passageway have a shape defining a plurality of grooves side by side around the internal passageway, each one of the grooves extending at least partly from the upstream end to the downstream end. |
