Abstract: An automatic analyzer for the assay of liquid samples pipetted from a container into a mixing chamber includes a controller for controlling the operation of the analyzer in response to sensors that monitor the functions of the analyzer. Within the analyzer, the responses of the sensors are evaluated and, when such responses do not meet prescribed criteria, error messages are provided. In the disclosed embodiments, the controller is implemented using at least one program-controlled processor. In order to monitor the pipetting operations in an effective manner, the automatic analyzer, in one embodiment, uses a plurality of operation and monitoring control units which operate independently of one another. Each of these units is by a central processing unit.

Abstract: A method for analyzing a sample of a steel melt taken from a metallurgical vessel includes taking a sample in a measuring probe, inserting the measuring probe into a holder, and severing the measuring probe at a position of the measuring probe at which the sample is held for producing a measuring probe stub with a severed sample part. The measuring probe stub with the severed sample part is then positioned at an analyzer for analysis. The measuring probe also includes a region for holding slag from the steel melt in the metallurgical vessel.

Abstract: A disposable sampling device for an apparatus for counting particles contained in a liquid, including a solid block-shaped housing connectable in a defined position to the apparatus. The housing has a member for introducing a sample therein, a device for metering a defined volume of the sample, and a chamber for containing a defined volume (V) of a diluting liquid. A diluting chamber is provided together with a device for simultaneously directing the defined volume of a sample and the defined volume of diluting liquid to the diluting chamber for obtaining therein a diluted sample. A device is provided for directing at least a portion of the diluted sample past a particle detecting member, and a signal transmitting member connects the particle detecting member and terminal member located at an outer boundary of the housing in a position corresponding to a location of a terminal member of the apparatus when the housing is connected thereto in the defined position.

Abstract: An embodiment of the apparatus comprises a hollow tubular body (a) of a cross-section size larger than the diameter of any single particle but smaller than twice the diameter to accommodate passage of a single particle at a time through the hollow tubular body and (b) of a length to accommodate a predetermined number of particles. The apparatus includes an obstruction within the body that permits passage of fluid but prevents passage of a particle. The apparatus also includes a force applicator at one end of the tubular body to apply a force to draw a flow of fluid and particles into an end of the element to fill the hollow tubular body with particles along a length of the body up to the obstruction and to maintain the force so as to retain the particles within the body while transporting the retained particles to a location.

Abstract: A sample testing system has a chamber sealing, apparatus adapted to receive a chamber containing a fluid sample material and to seal portions of a chamber into segments. A reagent injector cartridge actuator is adapted to receive a reagent injector cartridge having at least one needle in fluid communication with a reagent reservoir, and to move a reagent injector cartridge to inject a quantity of reagent into a segment of a chamber. In certain preferred embodiments, a flow control device induces a flow of sample in a segment. A sensor generates a signal corresponding to a condition of the mixture.

Abstract: A titration apparatus includes a syringe and a stirring arrangement located within the syringe for mixing of its content. A single narrow bore for drawing and discharging of liquids and an arrangement for measuring volume of liquids are also provided. The stirring arrangement is located within the syringe.

Abstract: The process is disclosed for transforming a liquid mixture sample in a pressurized container to a vapor phase sample of substantially the same concentration as in the liquid mixture which includes the combination of a coarse filter, a first orifice or pressure regulator device, a pressure cut-off switch or second pressure regulator, a coalescing filter, and a fitting for linking the device to an analytical device.

Abstract: The present invention enables siloxanes which have a detrimental effect on the quality of products during semiconductor production to be efficiently removed from silicon compound gases, and enables minute amounts of siloxanes in these gases to be accurately measured to a few ppb, thus allowing for improvements in quality control by offering silicon compound gases of high purity. Diatomaceous earth M filled into a removal column 2 is heated by heating means provided on the removal column 2, while an inert gas such as nitrogen or helium is fed from an inert gas delivery pipe 13 via a pressure regulator 5 and an entry valve 6 into the removal-column 2, and is allowed to flow out through an outlet valve 8 in order to thermally activate the diatomaceous earth M. After activation, the removal column is cooled to a temperature of 60-0° C.

Abstract: An on-line sampling and analysis system and method in which a sampling line inlet pipe receives a continuous flow of a suspension or a slurry having particulates, such as grains, seed or phosphate rock, for rapid analysis of the contents therein in a flowing stream. A sample presentation area such as a window is positioned below the flow of the suspension or slurry in an assembly allowing for the depositing of a sample of solid content from the suspension or slurry which is collected for viewing by a computer controlled video camera. The camera is provided for imaging the sample of the solid content collected at the sample presentation area, and a personal computer analyzes images provided by the camera to characterize the content of the fluid media.