The present disclosure relates to a membrane extraction apparatus for extracting a component from a first liquid. The apparatus may incorporate a housing comprised of first and second mating housing halves, with each housing half having an open faced channel formed therein such that the channels at least partially overlay one another when the two housing halves are secured together. A membrane filter is disposed between the two housing halves to overlay the open faced channels. The membrane filter extracts the component from the first liquid and transfers the component into the second liquid as the first and second liquids flow through the first and second housing halves.

A method and system for performing biomolecule extraction are provided that use liquid-to-liquid extraction (LLE) in combination with an electrowetting on dielectric (EWOD) device to provide a biomolecule extraction solution that has high extraction efficiency and that is less costly and easier to use than current state of the art methods and systems. The system and method are well suited for, but not limited to, extraction of DNA, RNA and protein molecules.

The interaction system includes: an interaction unit internally including a process flow path that allows a first fluid and a second fluid to flow through the process flow path so as to come into contact and interact with each other; a separation container connected to an outlet of the process flow path so as to receive a mixed fluid of the first fluid and the second fluid discharged from the outlet of the process flow path to retain the received mixed fluid to separate the mixed fluid into the first fluid and the second fluid; a first fluid supply device configured to supply the first fluid to an inlet of the process flow path; a second fluid path connecting a region, where the separated second fluid is accumulated, of the separation container and the inlet of the process flow path so as to guide the second fluid separated in the separation container to the inlet of the process flow path; and a second fluid feed pump provided on the second fluid path to send the second fluid separated in the separation container from the separation container to the inlet of the process flow path.

A method and system for performing biomolecule extraction are provided that use liquid-to-liquid extraction (LLE) in combination with an electrowetting on dielectric (EWOD) device to provide a biomolecule extraction solution that has high extraction efficiency and that is less costly and easier to use than current state of the art methods and systems. The system and method are well suited for, but not limited to, extraction of DNA, RNA and protein molecules.

An extraction system includes an extractor that carries out an extraction treatment of bringing a raw material liquid into contact with an extraction liquid so that metal ions are extracted from the raw material liquid to migrate to the extraction liquid, a raw material liquid return path that leads the raw material liquid from a separator to a raw material liquid tank; and a raw material liquid pH regulator addition apparatus connected to a raw material liquid pH adjustment place that is one of the raw material liquid tank and the raw material liquid return path, the raw material liquid pH regulator addition apparatus configured to add a raw material liquid pH regulator to the raw material liquid, the raw material liquid pH regulator being a pH regulator that increases pH of the raw material liquid that have been decreased by the extraction treatment.

The invention provides a microfluidic system for monitoring the condition of lubricating oil. The microfluidic system comprises a microfluidic device with at least one microchannel (40) configured to allow a sample of lubricating oil (52a) to pass therethrough as a laminar flow. The device has at least one separating device (41) configured to selectively separate at least one component (54b) from the lubricating oil (52a) in the fluid flow. The microfluidic system also comprises a detector device (20, 22) configured to detect the presence and/or measure at least one property of the at least one component passing through the microfluidic device after separation in the microchannel (40).

The present disclosure relates to a membrane extraction apparatus for extracting a component from a first liquid. The apparatus may incorporate a housing comprised of first and second mating housing halves, with each housing half having an open faced channel formed therein such that the channels at least partially overlay one another when the two housing halves are secured together. A membrane filter is disposed between the two housing halves to overlay the open faced channels. The membrane filter extracts the component from the first liquid and transfers the component into the second liquid as the first and second liquids flow through the first and second housing halves.

An extraction method is aimed at extracting an object component by transferring the object component from a first liquid containing a microorganism and the object component to a second liquid to which the object component can be transferred and that is capable of causing phase separation from the first liquid, with use of a flow channel including a merging part, a flow part, and an outlet part. The extraction method includes a step of supplying the first liquid to the merging part, a step of supplying the second liquid to the merging part, a step of passing the first liquid and the second liquid supplied to the merging part, through the flow part, in a state where a phase of the first liquid and a phase of the second liquid are separated from each other, a step of discharging the first liquid and the second liquid passed through the flow part, from the outlet part, and a step of collecting the first liquid and the second liquid discharged from the outlet part, into a collector.

A surfactant of formula (I):

A-(L.sub.1).sub.a-(C.sub.2).sub.b-(L.sub.2).sub.c-X (I)

wherein

A is a perfluoropolyether;

L.sub.1 is CONR', wherein R is selected from H and C.sub.1-6 alkyl;

a is 0 or 1;

b is 0 or an integer between 1 and 10;

L.sub.2 is a linking group;

c is 0 or 1; and

X is a charged group.

A method and system for performing biomolecule extraction are provided that use liquid-to-liquid extraction (LLE) in combination with an electrowetting on dielectric (EWOD) device to provide a biomolecule extraction solution that has high extraction efficiency and that is less costly and easier to use than current state of the art methods and systems. The system and method are well suited for, but not limited to, extraction of DNA, RNA and protein molecules.