An embodiment for a microfluidic device is provided. The device comprises two areas, arranged side-by-side, and a trigger channel. They include a first area, which is delimited by a first liquid pinning barrier, and a second area, which is delimited by a second liquid pinning barrier. The latter extends parallel to the first liquid pinning barrier to delimit a corridor. The trigger channel extends through the corridor between the two areas. In addition, the trigger channel connects the first liquid pinning barrier with the second liquid pinning barrier, allowing a first liquid pinned at the first liquid pinning barrier and a second liquid pinned at the second liquid pinning barrier to be contacted, each, by a reverse flow of the second liquid in the trigger channel and thereby start mixing at a level of the corridor, in operation. The invention is further directed to related methods of operation.

An embodiment for a microfluidic device is provided. The device comprises two areas, arranged side-by-side, and a trigger channel. They include a first area, which is delimited by a first liquid pinning barrier, and a second area, which is delimited by a second liquid pinning barrier. The latter extends parallel to the first liquid pinning barrier to delimit a corridor. The trigger channel extends through the corridor between the two areas. In addition, the trigger channel connects the first liquid pinning barrier with the second liquid pinning barrier, allowing a first liquid pinned at the first liquid pinning barrier and a second liquid pinned at the second liquid pinning barrier to be contacted, each, by a reverse flow of the second liquid in the trigger channel and thereby start mixing at a level of the corridor, in operation. The invention is further directed to related methods of operation.

The present invention discloses a method for confined impinging jets (CIJ) mixing with imbalanced momenta. The method includes the following steps: connecting each inlet of a CIJ mixer with a to-be-mixed fluid by using an inlet conduit; connecting an outlet of the mixer with an inlet of a suction device by using an outlet conduit; and starting the suction device, enabling the to-be-mixed fluids to enter the mixer sequentially through the conduits and the inlets of the mixer and to mix in a mixer chamber, and the mixture is then sucked out from the outlet of the mixer and flows sequentially through the conduit, the inlet of the suction device, and the outlet of the suction device.

To condition an operating medium in a test object circuit (PK) of a test object (P) on a test bench to a desired temperature as quickly as possible, the invention proposes providing a mixing unit (3), there being provided, in the mixing unit (3), a mixing region (28) in which operating medium of the test object circuit (PK) can be mixed with preconditioned operating medium from a conditioning circuit (KK) in order to condition the operating medium in the test object circuit (PK) to the predefined setpoint temperature (T_SOLL), there being provided, on the mixing unit (3), for the fluidic integration of the mixing unit (3) in the test object circuit (PK), at least one test object circuit supply connection (26a) and at least one test object circuit outlet connection (26b) which are fluidically connected to one another via the mixing region (28) in order to form a part of the test object circuit (PK), there being provided, on the mixing unit (3), for connection of the mixing unit (3) to a conditioning unit (2) of the conditioning system (1), at least one conditioning unit supply connection (27a) and at least one conditioning unit return connection (27b) which are fluidically connected to one another via the mixing region (28) in order to form a part of the conditioning circuit (KK) for the operating medium.

An apparatus for premixing fluids to form dialysate for an extracorporeal blood treatment includes at least a first feed portion for supplying at least a first fluid from at least a first fluid reservoir, at least a second feed portion for supplying at least a second fluid from at least a second fluid reservoir, a premixing portion being configured to premix fluids supplied via the feed portions in counter flow to form a fluid mixture and at least one drain portion for draining the fluid mixture premixed in the premixing portion as dialysate. A method carries out appropriate steps. In a conductivity measurement along the drain portion the conductivity of the premixed fluid mixture is measured by means of a digital filter adapted to be parameterized based on at least two state variables of the premixing process at least in two phases with a first predictive phase and a second corrective phase.

The present disclosure provides a method for processing a fluorine-containing aqueous solution. The method comprises a reaction step for mixing in a vertical direction the fluorine-containing aqueous solution and a disiloxane compound represented by a general formula R.sub.aR.sub.bR.sub.cSiOSiR.sub.dR.sub.eR.sub.f, wherein R.sub.a, R.sub.b, R.sub.c, R.sub.d, R.sub.e and R.sub.f are selected independently from each other from a group consisting of a phenyl group and an alkyl group comprising from 1 to 20 carbon atoms and hydrogen, to react a fluorine ion in the fluorine-containing aqueous solution with the disiloxane compound, obtaining a first reaction liquid containing a monofluorosilane compound represented by general formulas R.sub.aR.sub.bR.sub.cSiF and R.sub.dR.sub.eR.sub.fSiF.

Provided is a method for producing a liquid medium composition, including using a junction conduit structure 10 having a structure in which a first inlet conduit 11 and a second inlet conduit 12 are joined together to form an outlet conduit 13, and flowing a first liquid 1 containing a particular compound into the first inflow conduit 11 and flowing a second liquid 2 containing a linking substance into the second inlet conduit 12, and allowing the flows of the both liquids to join together to mix the both liquids, thus forming a liquid medium composition 3 containing structures formed by the particular compound linked via the linking substance dispersed therein while being flown through the outlet conduit 13.

Provided is a method for producing a liquid medium composition, including using a junction conduit structure 10 having a structure in which a first inlet conduit 11 and a second inlet conduit 12 are joined together to form an outlet conduit 13, and flowing a first liquid 1 containing a particular compound into the first inflow conduit 11 and flowing a second liquid 2 containing a linking substance into the second inlet conduit 12, and allowing the flows of the both liquids to join together to mix the both liquids, thus forming a liquid medium composition 3 containing structures formed by the particular compound linked via the linking substance dispersed therein while being flown through the outlet conduit 13.

An apparatus for premixing fluids to form dialysate for an extracorporeal blood treatment includes at least a first feed portion for supplying at least a first fluid from at least a first fluid reservoir, at least a second feed portion for supplying at least a second fluid from at least a second fluid reservoir, a premixing portion being configured to premix fluids supplied via the feed portions in counter flow to form a fluid mixture and at least one drain portion for draining the fluid mixture premixed in the premixing portion as dialysate. A method carries out appropriate steps. In a conductivity measurement along the drain portion the conductivity of the premixed fluid mixture is measured by means of a digital filter adapted to be parameterized based on at least two state variables of the premixing process at least in two phases with a first predictive phase and a second corrective phase.

A liquid-liquid extraction system (1) adapted for the flow of two or more liquids therein is disclosed. The system comprises a mixer settler sub-system (100) and a counter-current liquid-liquid extraction column (200). The sub-system (100) comprises one or more mixer settlers (110) connected in series, and the column (200) comprises either a mixing section (260) comprising an agitation means (261) and/or a static section (280) comprising an internal (281). The first outlet (131) of the mixer settler sub-system (100) is in fluid communication with the first inlet (221) of the column (200) and the second inlet (112) of the mixer settler sub-system (100) is in fluid communication with the second inlet (222) of the counter-current liquid-liquid extraction column (200). The invention further relates to a counter-current liquid-liquid extraction process for using said system 1. The present invention further relates also to the use of the system (5) or process in removing aromatic compounds from organic streams, in treating an oil stream of a refinery, or in a liquid-liquid extraction process having at least two feed streams of different viscosity, similar density, or low interfacial tension.