Abstract: A dilution and mixing cartridge comprising a sample application site, a mixing chamber in fluid receiving relationship to the sample application site, a diluent application site in fluid donating relationship to the mixing chamber, a first valve means selectively preventing flow from the diluent application site to the mixing chamber, and a mixture isolating chamber hydrostatically connected to the mixing chamber is provided along with a method for using this cartridge to sequentially dilute a sample with the same or different diluents.

Abstract: There is disclosed a simplified transfer mechanism that minimmizes both the number of moving parts needed, and the shapes of those parts. An L-shaped pusher blade is mounted to move in and out of a first station such as at an incubator so as to be effective to move a test element from the first station to two or more subsequent stations.

Abstract: An apparatus for processing high viscosity materials consisting of a heatable, horizontal vessel with a product inlet on the one end and a product outlet on the other end and, parallel to the axis of the vessel, a heatable rotating hollow shaft, supporting a plurality of heatable stirrer elements, and between these stirrer elements, fixed to the wall of the vessel, stationary baffle and scraping elements of different configurations.Each stirrer element comprises one to four stirrer wings, each with two hollow spokes and a peripheral, hollow ring-segment connecting the spokes, and fixed to the peripheral end of these ring-segment connections trailing product dragging blades.

Abstract: An apparatus for biochemical analysis wherein a measuring element is conveyed by a conveying device to a dispensing unit for dispensing a substance to be measured into the measuring elements. On the conveyed device a photometric device for subjecting the measuring elements to photometry, and a discharging device for discharging the measuring elements from the conveying device are mounted. The measurement of the elements can be conducted by two or more measuring methods.

Abstract: A flow injection analysis flow cell suitable for precipitation titration flow injection analysis wherein the flow cell has a chamber and a dammed space within the chamber. The carrier containing the precipitate is flowed into the dammed space and overflows it into the chamber. The flow cell is designed so that a chemical sensing probe can be inserted into the dammed space to allow precipitation titration flow injection analysis with reduced problems of flow cell plugging.

Abstract: A denitration reactor comprises an entrance duct portion into which exhaust gas from a boiler flows, an intermediate duct portion incorporating therein a catalyst layer for denitration, and exit duct portion connected to the intermediate duct portion. The intermediate duct portion is so disposed that an axis thereof is perpendicular to an axis of the entrance duct portion. The reactor further comprises a bent portion for connecting the entrance duct portion to the intermediate duct portion, and a flow controller. The wall of the bent portion is inclined with an inclination angle .theta. and extends from a section on which one wall of the intermediate duct portion crosses a surface of a floor of the entrance duct portion to a section on which a plane including opposite wall of the intermediate duct portion crosses a roof of the entrance duct portion.

Abstract: An automated, on-line solvent elimination interface system is described for use in characterizing the Composition Distribution (CD) of unknown materials emerging from a fractionating unit or a process stream. Fractionated samples to be analyzed, such as a polymer, in highly diluted form in one or more solvents, are provided by a fractionation unit such as a gel permeation chromatograph (GPC), a high pressure liquid chromatograph (HPLC), or a field flow fractionator (FFF). A number of discharges of each particular fraction are supplied to individual collection units within the interface system under controlled conditions of flow rate, temperature and pressure (vacuum) such that the solvents are flash-evaporated at the collection unit. A sufficient solid residue is built up on the collection unit for analysis by, for example, a Fourier transform infrared (FTIR) analyzer.

Abstract: There is described an incubator comprising a rotor moving above a stationary surface, the rotor comprising stations having a cover member, a lower support for a test element, and a spring biasing the cover member against the lower support. In one aspect of the invention, three reference surfaces are provided in the stationary surface for the lower support of the rotor to slide against. In another aspect, an improved spring is provided for ready, releasible capture by the rotor.

Abstract: A method and apparatus are disclosed for producing polyolefins by a fluidized gas phase polymerization process utilizing two stacked, substantially vertically aligned, reactors and a substantially vertical product transfer line for transfer of intermediate polyolefin polymer product from the polymerization zone of the upper reactor to the polymerization zone of the lower reactor. This abstract shall not be construed to define or limit in any way the scope of the invention, which is measured solely by the appended claims.

Abstract: There are described an incubator and an analyzer using such, in which the evaporation caps of the test element holding means are caused to be raised at loading and unloading stations by a fixed camming surface and a cam follower on each of the caps. As a result, size and complexity of the incubator are substantially reduced.

Abstract: A feeding device with a feeder element for liquid or gaseous samples includes an automatic sample exchanger having sample vessels for the liquid or gaseous samples and openings between the sample vessels through which the feeder element is automatically shifted from the feed position for serial samples to an initial position in contact with a feed opening for calibrating or cleansing media.

Abstract: A reactor in which a compact of hydrogen adsorption alloy is incorporated, comprising a plurality of parallel-bridged thermal reaction elements, each comprising a heat transfer pipe tightly enclosing a hollow cylindrical compact of hydrogen adsorption alloy and a jacket pipe enclosing in parallel, the heat transfer pipe with a path formed therebetween. The reactor achieves a rapid heat exchanging velocity and considerable shortening of reaction time as compared with the prior art.

Abstract: Main units which includes a reforming reactor and a combustor, both piled together having a heat conductive, partition wall therebetween, are located in a manner such that the combustor sides thereof face each other, with an auxiliary unit for supplying fuel to each combustor being put between the main units. Raw material gas to be reformed is supplied to the reforming reactor through a passage formed in each unit, and then discharged through another passage formed in each unit. Fuel is supplied to the auxiliary unit through yet another passage formed in the main unit, so that it may flow uniformly dispersing in the combustor via the auxiliary unit.

Abstract: An apparatus for distributing sample liquids from source test tubes into destination test tubes. It has distribution tips and air-supply devices for supplying air to the tips at a low rate. The tips are lowered into the source tubes, while air is flowing from the devices and through the tips. The moment the tips reach the surface levels of the liquids contained in the source tubes, the air pressure changes. When this change is detected, the tips start sucking the liquids from the source tubes. An apparatus similar to the above-mentioned one. It has distribution units each having a tip, a lever having a slit, and pins projecting from the units and inserted in the slit. The lever is rotated, changing the interval between the distribution units to the interval between the source or the destination tubes held in a rack. A similar apparatus which has distribution tips and a tray.

Abstract: An FCC catalyst regeneration technique in which the catalyst is regenerated in a dense bed regenerator. Regeneration effluent gases are collected from different parts of the regenerator vessel in a common collection zone and passed through the catalyst separation cyclones from the common collection zone. The cyclones may be arranged with their inlet horns adjacent one another in the common collection zone or a cyclone inlet manifold with a common inlet may be connected to the cyclone inlets. The inlet port to the manifold may be extended to form an elongated vertical duct through which regeneration effluent gases and entrained catalyst pass from the dilute phase of the dense bed to the cyclone so that mixing of the effluent gases is promoted to ensure combustion in residual quantities of oxygen present in the effluent gases before the gases enter the cyclones. Improved operating flexibility is obtained together with a reduced likelihood of cyclone damage as a result of localized high temperature excursions.

Abstract: A filter is disclosed for treating a gaseous stream to remove therefrom undesirable components, especially from exhaust gases of engines, and particularly from internal combustion engines, such as, for example, Diesel engines and the like. The filter includes a filter body or element having a plurality of inlet and outlet channels, with the inlet channels being separated from the outlet channels by walls or partitions to provide reaction chambers. The filter body is made a high-temperature-resistant, sintering material, and can be made of metal wire or metal chips which are compacted and subsequently sintered.

Abstract: Computer-controlled method and apparatus for automatic melt index testing, including a housing with a base carrying a heater block having a bore therein for receiving a metal cartridge. A cartridge carousel is rotatably carried on the base, and carries a plurality of such cartridges, each cartridge having a plug at the bottom end thereof with a orifice through the plug, and each cartridge having a bore therein for receiving a sample of a test substance and for receiving a piston on top of the pellets. A lift arm grasps the cartridges, one at a time, and places each cartridge into the heater block, under the control of a microcomputer, by both lifting and rotating the transfer arm. The transfer arm includes a solenoid-operated grip for grasping the cartridges.The test unit carries a lift mechanism with a weight mounted atop a tamping rod, and an optical sensor for determining the height of the weight relative to the lift machinism.

Abstract: A process for introducing exothermic reactant vapor stream to an adiabatic catalyst zone comprising the steps of: preheating a volatile liquid exothermic reactant stream below its autogenous temperature under process pressure; contacting the preheated liquid reactant stream in a saturator unit with a hot diluent gas to vaporize the reactant stream in gaseous mixture with the diluent stream; directing the gaseous mixture from the saturator unit to the catalyst zone for exothermic conversion of the reactant under substantially adiabatic reaction conditions in the presence of diluent gas; recovering reaction products and diluent gas from the catalyst zone; separating diluent gas from the products, compressing and recycling the diluent gas to the saturator unit.

Abstract: A system for analyzing a biological fluid or the like for a constituent of interest comprises structure defining a sample inlet port, structure defining an analysis region, a measuring system connected in sensing relation to the analysis region, and structure defining a reaction chamber that has an immobilized enzyme capable of modifying the constituent of interest. Control means operates liquid flow means in a unidirectional sample flow mode to initially flow a sample of material to be analyzed from the sample inlet port to the reaction chamber and to the analysis region for a measurement of unmodified sample material, and then operates the liquid flow means in a bidirectional sample flow mode to oscillate the sample material in the reaction chamber and facilitate modification by the immobilized enzyme of the constituent of material in the sample.

Abstract: A biochemical reaction analyzing apparatus having a reaction cup and a suction head for carrying the reaction cup, wherein the suction head can carry a reaction cup of light weight used for biochemical reaction analysis by hanging it by suction, wherein the head is provided with a cylindrical cavity as an air passage having a diameter approximately equal to that of an air suction and discharge opening formed at the lower end of the head body and extending up from the opening in the head body; further, if necessary, a plurality of circumferential grooves formed in the inner wall surrounding the cylindrical cavity or a vertically movable weight fitted in the cylindrical cavity is provided.