3491results about "Liquid solutions solvent extraction" patented technology

An apparatus for analyzing biologic fluid is provided that includes a first planar member, a second planar member, and at least three separators. At least one of planar members is transparent. The separators are disposed between the members, and separate the members to form a chamber having a height. At least one of the members or separators is sufficiently flexible to permit the chamber height to approximate the mean size of the separators. During use, the biologic fluid to be analyzed is disposed within the chamber.

A reactor produces a gas-in-liquid emulsion for providing increased interfacial contact area between the liquid and the gas for improved reaction of the gas with the liquid, or more rapid solution or reaction of a difficulty soluble or immiscible gas in or with a liquid. The reactor is suitable for a continuous or batch type process. Rotor and stator cylindrical members are mounted for rotation relative to one another and have opposing surfaces spaced to form an annular processing passage. The gap distance between the opposing surfaces and the relative rotation rate of the cylindrical members are such as to form a gas-in-liquid emulsion of the gas in the liquid. The liquid and gas pass through the processing passage, changing into the gas-in-liquid emulsion.

This invention relates to microchannel apparatus that includes microchannels with interior surface features for modifying flow; processes utilizing this microchannel architecture, and methods of making apparatus having these features.

A dispenser (200) dispenses an amount of concentrate in a container (204) using a diluent to form a use solution. A dispenser includes a housing (201). A product holder (210) is positioned to support the container (204) with the concentrate in the cavity of the housing. The product holder (210) carried by a scale (240), wherein weight of the concentrate is concerned. A moveable container holder (215) is moveable between a first position and a second position. The container holder is positioned between the housing (201) and the container (204). A cover (216) is operatively connected to the container holder (215) at a connection. A cam surface is adjacent the housing (201). The cover (216) has a cam (216d) for contacting the cam surface (201a), wherein when the cover (216) is moved from a closed position to an open position, the connection moves upward, thereby carrying the container holder (215) and the container (204) which are moved upward lifting the container (204) off of the product holder (210).

A process for the purification or fractionation of aqueous soluble polymers using an aqueous two-phase system is described. The concentrations of the polymer to be fractionated and of an aqueous soluble salt, and the temperature of the aqueous fractionation medium are adjusted so that two phases form, the lower molecular weight polymer molecules partition into the high salt concentration phase, and the higher molecular weight polymer molecules partition into the low salt concentration phase. The resulting high molecular weight polymers are characterized by a higher average molecular weight and a narrower molecular weight distribution and decreased unsaturation than the unfractionated polymers. After being subjected to the fractionation process, polyol polymers that form hydrogels in aqueous solution exhibited higher viscosities and a liquid to gel transition over a narrower temperature range than the unfractionated polyol polymers.

A method of transferring mass of at least one solute between a liquid first phase and a fluid second phase that is immiscible with the first phase, the method comprising moving at least one droplet of said liquid first phase in a microfluidic device by using electric-type forces (electrowetting or dielectrophoresis) within a space that is filled with said fluid second phase. Said droplet is preferably moved by said electric-type forces along a path between a point for injecting said droplet into said microfluidic device, and an extraction and / or analysis zone, said path being defined in such a manner that said droplet sweeps through a significant fraction of said space filled with said fluid second phase. The method may include a step of transferring said droplet using said electric-type forces to a chemical analysis device integrated in said microfluidic device, and a step of chemically analyzing said droplet. The invention also provides a device for implementing such a method.