A vaporizer includes an outer tube configured to receive a flow of heated gas and an inner tube disposed at least partially within the outer tube. The inner tube is spaced apart from the outer tube such that the flow of heated gas is channeled through an annular space therebetween. The vaporizer also includes a crucible disposed at least partially within the inner tube. The crucible is extendable and retractable relative to the inner tube and within the outer tube. The crucible is configured to hold a molten metal such that a surface area of the molten metal exposed to the flow of heated gas is adjustable based on the position of the crucible relative to the inner tube. A heater is configured to vaporize the molten material and the vapor mixes with the flow of heated gas.

Systems and methods for extracting an analyte from a sample. The system includes a reaction vessel for receiving the sample and a reaction solution, a mixer for mixing the sample with the reaction solution, a filter and a drain for passing soluble components from the reaction mixture, including the dissolved analyte, from the reaction vessel. A purification vessel is located below the reaction vessel. A selective sorbent is disposed in the purification vessel for retaining contaminants from the soluble components from the reaction mixture and passing a purified analyte. An evaporation container is located below the purification vessel. A heater heats the evaporation chamber and evaporates the solvents from the purified analyte, which can then be quantitatively measured.

There is provided a film-forming material mixed-gas forming device including: a film-forming material supply unit that supplies a film-forming material in liquid form at a predetermined flow rate; a carrier gas supply unit that supplies a carrier gas at a predetermined flow rate; a main vaporization unit that vaporizes the film-forming material by heating the film-forming material supplied from the film-forming material supply unit and the carrier gas supplied from the carrier gas supply unit; and an auxiliary vaporization unit having a porous vaporization member which captures carried over droplets of the film-forming material in gas flowing out from the main vaporization unit and vaporizes the captured droplets of the film-forming material.

A vaporizer includes a tank body, a porous member disposed in the vaporizer and heated, a supply tube configured to supply a liquid material to the porous member, and a gas discharge passage configured to discharge a source gas produced by vaporizing the liquid material to the outside. An outlet of the supply tube is disposed in contact with or in close proximity to the porous member. When the outlet is disposed in close proximity to the porous member, a separation distance between the outlet and the porous member is not greater than a distance from the outlet to a bottom of a droplet of the liquid material formed and suspended at the outlet by surface tension.

A water vapor generating apparatus includes a chamber having an inner space defined therein; a space partitioning member including a first partitioning portion, and a second partitioning portion, wherein the space partitioning member divides the inner space into a water vapor discharge space and a heating space; a first evaporation tube disposed in the heating space and in a coil shape surrounding the second partitioning portion; a second evaporation tube disposed in the heating space and in a coil shape surrounding the first evaporation tube; an inner cage disposed between the first evaporation tube and the second evaporation tube, wherein the inner cage presses against the first evaporation tube toward the second partitioning portion; and an outer cage surrounding the second evaporation tube, wherein the outer cage presses against the second evaporation tube toward the first evaporation tube.

Systems and methods for extracting an analyte from a sample. The system includes at least one reaction vessel for receiving the sample and a reaction solution that are combined into a reaction mixture. Insoluble components are separated from the reaction mixture and soluble components, including a dissolved analyte are dispensed from the at least one reaction vessel. The system further includes at least one purification vessel configured to receive the soluble components from the at least one reaction vessel, separate contaminants from the soluble components, and dispense a purified dissolved analyte.

Disclosed is a novel method of controlling the formation of biuret in urea production. This is accomplished by reducing or preventing the formation of biuret in a concentration section, particularly in one or more concentrators or evaporators. The method comprises controlling the residence time of a urea aqueous stream treated in such concentration section in a manner independently of the volume flow per time interval of said stream into said concentration section. The residence time can be controlled, e.g., by providing the concentration section with an adjustable volume or by adding a gas to the urea stream to be treated. A combination of such measures can also be applied.

Provided herein are methods, systems, and devices incorporating use of materials to store, ship, and deliver process gases to micro-electronics fabrication processes and other critical process applications.

A vertical evaporation device comprising an evaporator made of a vertical panel with a grid of dividers and flanges folded on the four sides thereof joined to a refrigeration tube coil on the rear portion thereof and both being embedded in a support framework, which in turn has a water distributor by means of a hydraulic system with three inlet channels which is joined by means of clipping to the upper side of the device.

A cabinet for a solid material container comprises a main body having a top wall, a side wall, and a bottom wall; an entry/exit portion which is attached to a portion of the main body, for putting in and taking out the solid material container; an exhaust duct attached to a portion of the main body; a heating portion for heating the solid material container; a temperature measuring portion for measuring a temperature of the solid material container, or of the heating portion; and a cooling blower for blowing cooling air toward the solid material container.