Other

Milestone S.r.l.

Mls Mikrowellen-labor-systeme Gmbh

Milestone Inc.

Gossler Feuerfest- Und Isoliertechnik Gmbh

Mikrowellen-systeme Mws Gmbh

Agw Analysen-gerate Gmbh

Werner Lautenschlager

Francesco Visinoni

Bernd Klinge

Ingo Birnkraut

Bernd Warmbier

A system and method for controlling a microwave heated chemical process is disclosed. Time varying concentrations of some chemical substances within fumes in the microwave oven are monitored to detect concentration variations for which responses are known. Responses to the detected variations are initiated to control the chemical process without terminating the process. Examples of responses include varying microwave radiation energy, initiating safety systems, increased venting of the microwave oven, and so forth.

Method of controlling a chemical process by microwave radiation

Process and device for producing high-purity liquid chemicals

Disclosed is an apparatus for use within a microwave radiation field which enables the operator to perform successively a plurality of chemical or physical processes while the apparatus remains in the microwave cavity. The apparatus according to the invention can be used to perform a total microwave solvent extraction including the steps of drying, extraction, filtration, and concentration. Other examples of processes, which are carried out with this apparatus are digestions, hydrolyses, separations, agitations, and precipitations. The apparatus is constructed from a container having an inside vessel. The container and the inside vessel have a substantially closed volume there between. The container and the inside vessel are in fluid communication through a glass fiber filter disposed at approximately the bottom of the inside vessel. The container and the inside vessel are in fluid communication with a plurality of inlet and outlet ports, which provide or receive fluids to or from the inside vessel or the volume between the container and the inside vessel. The ports are also used to increase or decrease the fluid communication between the container and the inside vessel through the filter disposed near the bottom of the inside vessel. The glass fiber filter is removable from the inside vessel and can be replaced with a new one.

Apparatus for performing chemical and physical processes without sample transfer within a microwave radiation field

Disclosed is an apparatus for condensing vapors for use inside a microwave cavity. The cooling in the apparatus is provided by gas flow ventilation with air being the most convenient gas for use as a coolant. The apparatus has two ports, one port for connecting with a sample vessel and a second port for connecting with a pressure control device. The pressure control device has valves for operating a vacuum line and a feeding line. The disclosed apparatus enables a plurality of chemical digestion reactions, reflux reactions and dehydrations to be carried out simultaneously or sequentially within a microwave radiation field.

Apparatus for condensing gases within a microwave radiation field

Process for processing organic specimens

Method of controlling a chemical process heated by microwave radiation

A pressure monitoring system in which pressure in a container causes a slide which extends out from the container, to be moved against a group of springs in cascade formation and which are screened from microwave radiation. The extent of such movement, which corresponds to changes in container pressure, is measured by means of a light transmitter and a receiver which cause light to be reflected off a reflective surface of the slide and then analyzed. Also disclosed is a process in which the heating of a container is controlled as a function of the differential quotient of pressure over time.

Method and apparatus for measuring pressure in microwave heated vessels

Process and device for preparing and/or extracting samples using a

Heating chamber with pressure responsive door mounting

Method and device for the extraction treatment of a sample

Device for initiating and/or promoting chemical or physical processes in

Process and device for thermal treatment of gas, in particular thermal

Device for the evaporation treatment of preferably liquid substances, in

The invention relates to apparatus for performing chemical and physical pressure reactions on samples by the action of microwaves, having container inserts to receive the samples that are at least in part microwave-permeable and are arranged in a microwave-impermeable housing connected via at least one coupling opening to a microwave generator. To enable pressure reactions to be performed at higher pressures and more economically overall, it is proposed according to the invention that the housing include at least one pressure vessel (4) of high-pressure resistant material whose coupling opening (12) is microwave-permeable and closed in a high-pressure resistant manner, and that a single container insert is arranged in the pressure vessel (4) so as to fit closely against its inner surface.

Apparatus for performing chemical and physical pressure reactions

In a sample holder (9) for decomposition or analysis of sample material by heating the sample material in a heating appliance (1) such as a microwave oven, comprising a receiving part (11) having a filling opening (15) for the sample material, a lid (14) to close the receiving part (11) and a valve (16) in the upper part of the sample holder (9) that comprises a valve seat and a valve member that bears, counter to its direction of closure, against an elastically yielding thrust piece (31), the cross-section of the thrust piece (31) in the plane running in the direction of closure of the valve (16) is shaped as a plate spring.

Sample holder for decomposition of analysis of sample materials

Growing community of inventors

Leutkirch, Germany

Werner Lautenschlager