Abstract: A fluid catalytic cracking process and apparatus is described which includes a high temperature stripper (hot stripper) to control the carbon level and sulfur on spent catalyst, followed by catalyst cooling to control the regeneration inlet temperature. The high temperature stripper operates at a temperature between 100.degree. F. above the temperature of a catalysthydrocarbon mixture exiting a riser and 1500.degree. F. The regenerator inlet temperature is controlled to obtain the desired regeneration temperature, regenerator outlet temperature, and degree of regeneration. The regenerator is maintained at a temperature between 100.degree. F. above that of the catalyst in the high temperature stripper and 1600.degree. F. The present invention has the advantage that it separates hydrogen from catalyst to eliminate hydrothermal degradation, and separates sulfur from catalyst as hydrogen sulfide and mercaptans which are easy to scrub.

Abstract: An acid monitoring kit is provided which is especially useful for monitoring acid rain. The kit includes a base plate having three discrete areas. One area is provided with a plurality of discrete separable bibulous pH indicator strips, each strip being impregnated with a selected acid-base indicator which is visually recognizable as at least one unique color in each such bibulous pH indicator strip when the bibulous strip is dry, and as a different color upon being wetted with water, the different color being dependent on the pH of the water. A second discrete area is provided with a plurality of color comparison reference standards in a plurality of zones, each zone being of a unique color which corresponds to the color of the water-wetted bibulous pH indictor strip, whereby comparison of the unique color of the pH indicator strip with the unique color of the reference standard provides an indication of the pH of the water.

Abstract: Method and apparatus for effecting contact of a gas with light particles of solid matter, where the particles are retained within particle retention screens to form a bed of particles and the particles move downward in plug flow by means of gravity. When the particles are light, that is, of relatively small size and low density, the velocity of the gas may be sufficiently high that downward movement of particles is hindered by the horizontal forces exerted on the particles by the flowing gas. This invention provides that gas flows through the bed of particles in a downwardly sloping direction instead of in a horizontal direction, so that the force exerted on a particle has a horizontal component and a downward vertical component. The vertical component of the force resulting from gas flow, along with the gravity force on a particle, is sufficient to overcome the frictional resistance to downward movement of a particle which results from the horizontal component of the flowing gas force.

Abstract: A medical and surgical instrument cleaning and disinfecting device consisting of a tubular body whose one end is open and whose other end is equipped with a liquid collection tank is shown. The detector senses the presence of an instrument inside of the tubular body and controls pressurized diffusion of a nebulized disinfection product which is sprayed on the instrument. A suction device pulls disinfection spray towards a reservoir.

Abstract: A pipetter barrel extension tube, attachable at its proximal end to any one of a variety of pipetter barrels and at its distal end to standard disposable pipetter tips. The pipetter barrel extension tube serves to extend the length of the barrels and provide sterile access to deep containers while substantially isolating the permanent barrel of the micropipet from damage caused by chemical and radiochemical contamination. One novel design feature of the extension tube is an air channel designed to minimize dead air volume in the extension tube. A removable conical insert plug serves to reduce the air channel volume. Removal of the plug facilitites cleaning and reuse of the extension tube. The device also includes a distal end segment which, when intact, serves as a space-filler to reduce dead air volume in disposable tips for pipetting small volumes.

Abstract: Solid material which is carried out of a fluidized bed reactor with the gas discharged therefrom and which is separated off in a separator is returned to the reactor by way of a recycling means. To reduce problems caused by virtue of differing pressure levels within the system in the recycling operation, the pressure in the recycling means between the separator and the upper boundary of a bed of solid material which is formed in the recycling means is reduced by suction removal of gas to a pressure level which is no higher than or even lower than the lowest pressure in the separator which in turn is lower than the pressure in the reactor.

Abstract: A holding fixture for medical use, serving to support and fix articles, such as medical instruments, that are to be sterilized, and intended for mounting on a support panel, composed substantially of two parts: a retaining post, provided at least in part with profiling, that is to be locked into place on the support panel, and a bracket that can be slipped onto this retaining post, the mounting aperture of the bracket being such that it is lockable by positive engagement with the retaining post. By this principle, the most varied kinds of holding fixtures, adapted individually to the position and shape of each instrument, can be devised with a minimum number of different components. These brackets can easily be locked in place and released again by exerting pressure and tension upon corresponding regions of the brackets, making them extremely simple to use.

Abstract: A diagnostic device (10) includes a plurality of standard solutions for being dispensed into a row of wells (20), the standard solutions contained within a predetermined number of standard tubes which are spaced a predetermined distance apart equal to the distance between the plurality of wells (20) whereby a single pipettor (28) can transfer the standards from the entire row of standard tubes (26) to a single row of wells (20) in a single transfer step. The invention further provides a mixing mechanism for agitating the entirety of a microtiter plate seated thereover.

Abstract: A device for conveniently sampling and testing oil from the crankcase of an internal combustion engine comprises a tubular member, installed in the dipstick guide tube of the internal combustion engine and having a chamber above the guide tube inlet, and a vacuum filled sample receptacle having a seal which, when the receptacle is inserted in the chamber, is opened causing oil from the crankcase to be drawn into the receptacle. When the receptacle is withdrawn from the chamber the seal automatically closes, providing a convenient container for the oil sample to be sent to a laboratory for analysis. Optionally, to test the oil for acidity at the time the sample is received in the receptacle, the receptacle may contain a reagent which will indicate by color the pH of the oil sample.

Abstract: In order to render harmless the aerosol laden smoke stream which results from the operation of medical lasers in or on mammalian bodies, the stream is moved in a closed circuit maintained at negative pressure. The circuit includes a container of sterilizing fluid to retain and destroy the larger aerosol particles and downstream of that container a chamber having an oxygen enriched atmosphere which is heated to a temperature sufficient to incinerate the remaining aerosol particles which are too small to filter. The thus purified stream is then cooled and released to ambient.

Abstract: At least one seal for a sterilization container system, wherein the sterilization container system comprises a base, a lid, and a gasket for providing a microorganism proof seal between the lid and the base. The seal comprises a belt of shrinkable material having an anchor at each end. Corresponding anchor openings are provided in the base of the sterilization container system for the seal's anchors. The seal is installed by engaging one of its anchors in a corresponding anchor opening on one side of the sterilization container system's base, passing its belt over the lid of the sterilization container system, and then securing its other anchor in a corresponding anchor opening on the opposite side of the sterilization container's base.

Abstract: A dry type analysis element for detecting a specific constituent in a liquid is provided. The dry type analysis element comprises a light-transmissive support having thereon at least one water-penetrative layer, at least one of said water-penetrative layer(s) containing a composition capable of interacting with said specific constituent in said liquid, wherein said composition contains a leuco dye comprising at least one compound selected from the group consisting of compounds represented formula [I] and salts of these compounds ##STR1## wherein R.sup.1 represents a substituted or unsubstituted aryl group, R.sup.2 represents a substituted or unsubustituted alkyl group, and R.sup.3 represents a substituted or unsubstituted aryl group,and said leuco dye is dissolved in a hydrophobic solvent to form a solution that is contained in said water-penetrative layer as a dispersion in a hydrophilic medium.

Abstract: A culture medium used for cultivating mushrooms is sterilized by a sterilizing apparatus. The sterilizing apparatus comprises a sterilizing container in which the culture medium is placed, a steam supply pipe for supplying steam in the sterilizing container, an exhaust pipe for exhausting steam and air in the container, and a drain pipe for draining condensate from the container. The drain pipe includes a main pipe having a relatively large diameter and a bypass pipe provided with a trap. The amounts of steam supplying and exhausting and the amount of condensate draining are controlled in accordance with a predetermined mode during the sterilizing processes by regulating valve means mounted to the respective pipes. Two exhaust pipes having different exhausting capacities may be provided in consideration of environmental conditions.

Abstract: A device for dispensing a chemical solution into a pipeline transporting a liquid under pressure irrespective of whether the liquid pressure varies between a maximum and a minimum or is substantially constant. The volume of solution dispensed is varied at times when the liquid pressure is varying by selection of an aperture from a plurality of apertures at varying axial positions, for placing the interior of the pipeline in communication with the interior of the enclosure above the solution level, at times when the level drops axially to the selected aperture; or, at time when the liquid pressure is substantially constant, by adjustment of the amount of liquid permitted to enter the device.

Abstract: An apparatus for the multiple analysis of gases which can react with another gas to produce emission of light has at least two reaction chambers (1a, 1b), a single photodetector (3) and an optical redirection system (2) with a reflection surface movably mounted between the reaction chambers for sequentially and rapidly redirecting the light from the two reaction chambers onto the single photodetector for evaluation.

Abstract: A tubular housing is provided at one end thereof with a protective glass prism facing an observation opening in a pressurized reactor. The other end of the housing is closed and the intermediate part thereof supports an inclined mirror. A viewing tubular piece is arranged transversely to the tubular housing to receive light rays reflected from the mirror. The free end of the viewing piece is also provided with a protective glass prism.

Abstract: A fragrance dispensing device includes an annular element made from a solid, synthetic, polymeric, plastic material, such as a low density polyethylene, containing about 5 to about 20 weight % of a vaporizable fragrance material uniformly dispersed throughout. In one embodiment, the element is mounted on an oil lamp and closely surrounds, but is maintained out of contact with, the burner assembly. When the wick is lit, heat from the burner vaporizes and drives the fragrance material from the plastic material.

Abstract: Small scale recrystallization apparatus is described using a container tube and a plastic plug with the end of the plug and a constriction in the tube mismating in a precisely controlled ellipticity of one so as to allow passage of solution while blocking formed crystals.

Abstract: An apparatus for taking bulk samples comprising a housing having sampling tube and a pair of syringes mounted therein. One of the syringes contains a wetting agent which is injected into the material being tested prior to the sampling tube being utilized to remove a sample from the material being tested. The other syringe contains an encapsulating material which is injected into the area from which the sample was taken to seal or encapsulate that area to prevent fiber release into the air after the apparatus has been removed from the material being sampled.