Abstract: The invention provides a device for monitoring a fluid flux, said device comprising a body suitable for being introduced in a medium carrying a fluid flow, which body provides one or more passages for the fluid, each having an inlet, an outlet, and a reduced channel portion in fluid communication with said inlet and outlet via respective inlet and outlet funnels, said device further comprising means for determining a flow rate of fluid traveling within one or more of said reduced channel portions. In particular, at least one of said reduced channel portions is misaligned with respect said inlets and outlets. In a further aspect, the invention provides a method for monitoring a fluid flux.

Abstract: Device for simultaneously determining a mass transport of a fluid and a mass transport of a substance dissolved in the fluid, comprising at least two cartridges filled with a porous matrix, and assembly means, configured to keep the cartridges together, characterized in that the top side and the bottom side of each cartridge are non-permeable and the side wall is permeable, and in that the assembly means are configured to keep the cartridges together according to a stack, in which the cartridges may be flowed through in parallel without cross-contamination.

Abstract: Device (10) for simultaneously determining a mass transport of a fluid and a mass transport of a substance dissolved in the fluid, comprising at least two cartridges (11-14) filled with a porous matrix, and assembly means (15), configured to keep the cartridges together, characterized in that the top side (111) and the bottom side (112) of each cartridge are non-permeable and the side wall (113) is permeable, and in that the assembly means are configured to keep the cartridges together according to a stack, in which the cartridges may be flowed through in parallel without cross-contamination.