Abstract: A low-cost drug compounding system that can practically fit inside of a fume hood or the like is provided. The system can use a single pump operable in forward and reverse directions (or multiple pumps) to compound complex mixtures particularly including those requiring the creation of solutions from dry or powdered ingredients. A wireless link allows operation of the system remotely. In one embodiment, the system uses a disposable mixing tube set that can be discarded after mixing while still attached to the base ingredient containers used for the compounding thereby minimize the chance of personnel exposure.

Abstract: An air replenishing fume hood includes a cabinet, a door set, an air replenishing unit and an air guiding unit. The cabinet has an inner casing defining an operating chamber and having an air inlet and an air outlet. A side of the cabinet includes an operation window. A first air passage is formed between the inner casing and the cabinet. The door set includes an outer door leaf adapted to open or close the operation window, and an inner door leaf adapted to open or close the air inlet. An end of the air replenishing unit extends into an external space via an outdoor tube, and another end of the air replenishing unit is connected to the first air passage via an extension tube. The air guiding unit includes an end connected to the air outlet, and another end extending into the external space or a collection tank.

Abstract: An apparatus including a sensor configured to sense total pressure within an inner chamber of a housing, and to sense differential pressure between the inner chamber of the housing and work area outside of the housing; a computer processor configured to receive signals from the sensor based on the total pressure and the differential pressure; and wherein the computer processor controls the rate at which the flapper oscillates based on the total pressure signal from the sensor, to thereby control the direction of flow of air from the inner chamber of the housing through the plurality of openings of the blade, through the plurality of openings of the teeth, for optimum containment with ultra stable vortex inside the chamber; and controls the rate at which exhaust damper modulates based on differential pressure signal to maintain constant face velocity at the apparatus user opening and out an exhaust opening of the housing.

Abstract: The invention relates to a laboratory fume cupboard (100) comprising, connected in a moveable manner with a laboratory housing (60), a sash (30) for opening and closing a fume cupboard interior, in which between the sash (30) and a side post (10) of the laboratory housing (60) an air opening (70) is provided which is designed for producing wall flows in the interior of the fume cupboard.

Abstract: An exhaust device for convection or combi ovens captures exhaust from opening side-opening oven doors with minimal energy waste.

Abstract: A safety cabinet adaptable for a variation in body height of a worker using the safety cabinet, that is, a safety cabinet which prevents various bacteria from proceeding from the outside of the safety cabinet into a working space of the safety cabinet and prevents bacteria or virus from proceeding from the working space to the outside of the safety cabinet irrespective of a change in opening area of a front opening, is provided. A flow velocity of a clean air supplied into the working space and a flow velocity of the air flowing through the front opening are set at respective velocities predetermined to keep a physical isolation for preventing the contamination in accordance with a size of the front opening. Further, in the safety cabinet, the size of the front opening communicating with the working space under the front surface shutter is adjustable between 200 mm and 300 m.

Abstract: A reverse oblique air curtain exhaust cabinet comprises a cabinet that has a bottom plate and an elongate air blow slot is provided in front of the bottom plate. Through the elongate air blow slot, air is blown upward at an oblique angle toward the rear plate of the cabinet. An air-extraction hood is provided in a space defined above the bottom plate in a way of being vertically movable relative to the cabinet. The air-extraction hood has an elongate air-extraction part that is parallel to the elongate air blow slot in a way that the elongate air-extraction part is above and spaced from the elongate air blow slot toward the rear plate of the cabinet. Thereby, an oblique air curtain that flows upward is formed to remove the pollutants between the oblique air curtain and rear plate and left and right lateral plates in a more energy-saving way.

Abstract: A safety cabinet can adapt to variations in body height of a worker or user. The safety cabinet prevents various bacteria from proceeding from the outside of the safety cabinet into a working space of the safety cabinet and prevents bacteria or viruses from proceeding from the working space to the outside of the safety cabinet irrespective of a change in opening area of a front opening. A flow velocity of clean air supplied into the working space and a flow velocity of the air flowing through the front opening are set in accordance with a size of the front opening to maintain physical isolation and prevent contamination. The size of the front opening of the safety cabinet is adjustable.

Abstract: A safety cabinet adaptable for a variation in body height of a worker using the safety cabinet, that is, a safety cabinet which prevents various bacteria from proceeding from the outside of the safety cabinet into a working space of the safety cabinet and prevents bacteria or virus from proceeding from the working space to the outside of the safety cabinet irrespective of a change in opening area of a front opening, is provided. A flow velocity of a clean air supplied into the working space and a flow velocity of the air flowing through the front opening are set at respective velocities predetermined to keep a physical isolation for preventing the contamination in accordance with a size of the front opening. Further, in the safety cabinet, the size of the front opening communicating with the working space under the front surface shutter is adjustable between 200 mm and 300 m.

Abstract: A safety cabinet adaptable for a variation in body height of a worker using the safety cabinet, that is, a safety cabinet which prevents various bacteria from proceeding from the outside of the safety cabinet into a working space of the safety cabinet and prevents bacteria or virus from proceeding from the working space to the outside of the safety cabinet irrespective of a change in opening area of a front opening, is provided. A flow velocity of a clean air supplied into the working space and a flow velocity of the air flowing through the front opening are set at respective velocities predetermined to keep a physical isolation for preventing the contamination in accordance with a size of the front opening. Further, in the safety cabinet, the size of the front opening communicating with the working space under the front surface shutter is adjustable between 200 mm and 300 m.

Abstract: A fume hood is described for use in removing material from, or inserting material into, the opening of a container. The fume hood enclosure has a floor with an opening for insertion of the upper end of the container into the enclosure. The floor includes a circumferential groove around the opening, preferably in a raised shoulder. An annular flexible membrane having an inner diameter smaller than the diameter of the opening is placed in axial alignment over the opening and the groove. A vacuum is drawn on the groove through a vacuum port to pull the section of the membrane above the groove into the groove, holding the membrane securely in place during use. If desired, a retainer can be placed in the groove above the membrane to prevent movement of the membrane in the event of a loss of vacuum.

Abstract: A method and apparatus for applying an atomized liquid solution upon a person, comprising a spray enclosure booth; an exhaust vent located below an anticipated user's facial area zone, the exhaust vent disposed within the bottom tray or a lower area of at least one wall or a lower area of a door and configured for exhausting ambient atomized liquid solution from the spray enclosure booth; a rigid conduit support defining a central air flow conduit connected to a bottom tray and pneumatically connected to an exhaust vent and providing structural integrity to the enclosure booth; an atomizing spray head assembly movably connected to the rigid conduit support and physically supported by the rigid conduit support; and an exhaust system configured to exhaust ambient atomized liquid solution from the spray enclosure booth by drawing atomized solution into the exhaust vent then through and out of the rigid conduit.

Abstract: Disclosed is a human cell/tissue culturing system including a plurality of incubators, each incubator capable of aseptically storing/culturing cell(s) or tissue(s) derived from a (human) individual and identifying the cell(s) or the tissue(s) during incubation, wherein each incubator comprises a detector corresponding to an individual key, the response of the detector permitting opening/closing of a door of each incubator, the response of the detector of one incubator triggering the interception of the function of the detector(s) of other incubator(s) to consequently inhibit opening/closing of the door(s) of the other incubator(s).

Abstract: The present invention relates to controlled airflow and air distribution within a laboratory safety enclosure and in particular, to turbulence-free airflow within a laboratory fume hood. The fume hood of the present invention has a work chamber and an access opening having an upper edge. A horizontal air deflector structure is positioned adjacent to the upper edge of the access opening to divert a portion of air entering the access opening upwardly within the chamber, whereby the diverted air eliminates an airflow eddy current.

Abstract: Methods and apparatus for controlling impurity levels in an enclosed printing press environment are disclosed. A disclosed system controls impurity levels by using variable speed fans to control the intake of air into the enclosed environment and the exhausting of air from the enclosed environment. The exhaust fan is used to control the impurity levels within the enclosed environment. Adjustments to the speed of the exhaust fan are based on sensors which measure impurity levels in the enclosed environment. The intake fan is used to maintain a constant static pressure level within the enclosed environment. Adjustments to the intake fan speed are based on static pressure sensors within the enclosed environment.

Abstract: In a process facility for producing semiconductor wafers, a third physical unit is configured between two physical units that produce mini environments. The third physical unit has a laminar flow at right angles to the laminar flows of the two physical units and is operated with a slightly higher flow velocity. According to the Bernoulli equation, the static pressure in the third physical unit is therefore lower than in the surrounding two physical units. Advantageously, therefore, no contamination from the more highly loaded one of the two physical units passes over into the lesser loaded one of the two physical units.

Abstract: A fume hood includes a top, bottom sidewalls, front panel and a back panel that define an enclosed workspace. The fume hood also includes a movable sash for opening and closing an access opening. The fume hood may also include an air chamber having an inlet in the front panel. The air chamber includes a baffle system that evenly distributes the inlet air as the air travels through the air chamber. An unimpeded flow of air is discharged downward and away from the breathing zone of the technician and proximate to the sash to reduce the forward momentum of air trying to escape the fume hood. In an alternate embodiment, the fume hood also includes an alarm system to provide a visual and/or audible indication to the user of a working condition of the fume hood. The characteristics of the visual indication and the audible indication may vary depending on the position of the movable sash and the measured airflow from the discharge of the air chamber.

Abstract: Enclosures having adjustable clean gas flow environments and methods of enclosed pressure differential distribution technology. Specifically, clean gas flow enclosures, which provide for the isolation of materials from airborne micro-particulate contamination. An embodiment of the invention utilizes a small footprint, modular, selectable, clean-gas flow environment for handling and isolating materials. The environment can be a clean room class environment by providing filtered gas from a gas flow generator (12) through a gas filter (13) to a filtered gas flow space (20). An embodiment of the invention provides a first plenum (23) and a second plenum (26) so that both a horizontal filtered gas flow and vertical filtered gas flow may be used separately or in combination within the same filtered gas flow space (20).

Abstract: A fume hood includes a top, bottom sidewalls, front panel and a back panel that define an enclosed workspace. The fume hood also includes a movable sash for opening and closing an access opening and an airfoil disposed proximate an edge portion of the opening to direct airflow through the opening and into the workspace. The airfoil is automatically raised from a down position to an up position when the sash is raised to a predetermined height. In addition, the airfoil may be automatically raised when the velocity of the airflow into the access opening decreases below a predetermined value. Once raised, the airfoil may be automatically or manually lowered to the down position. In one embodiment, the airfoil includes one or more fins having an angled portion that extends downwardly below the work surface of the fume hood when the airfoil is in the down position, thereby reducing the possibility of a potential spill when the technician removes an item from the workspace.

Abstract: A fume hood is provided having an adequate level of safety while reducing the amount of air exhausted from the hood. A displacement flow fume hood works on the principal of a displacement flow which displaces the volume currently present in the hood using a push-pull system. The displacement flow includes a plurality of air supplies which provide fresh air, preferably having laminar flow, to the fume hood. The displacement flow fume hood also includes an air exhaust which pulls air from the work chamber in a minimally turbulent manner. As the displacement flow produces a substantially consistent and minimally turbulent flow in the hood, inconsistent flow patterns associated with contaminant escape from the hood are minimized. The displacement flow fume hood largely reduces the need to exhaust large amounts of air from the hood. It has been shown that exhaust air flow reductions of up to 70% are possible without a decrease in the hood's containment performance.

Abstract: A system for controlling the operation of a laboratory with a fume hood having a sash. The system includes an intelligent occupancy monitor mechanism. The system includes an intelligent sash closure mechanism. The producing mechanism and the controlling mechanism form a fully distributed intelligent non-hierarchical architecture. The system includes a network to which the producing mechanism and the controlling mechanism are connected to communicate with each other. A method for controlling air flow in a fume hood.

Abstract: A compact fume hood arrangement includes a bypass channel mounted to a top panel of the fume hood which effectively extends a front open face of the fume hood upwardly providing an air path through the bypass channel which provides sufficient air flow to prevent disadvantageous air currents due to excessive face velocity. A vertical sash can be used such that raising of the sash proportionally closes the bypass channel while opening the open face of the fume hood.

Abstract: A system for controlling laboratories having fume hoods comprising a network along which information is carried. The system is also comprised of a controller in contact with the network for receiving information from and providing information to the network. Additionally, the system is comprised of means for sensing a laboratory's state. The sensing means is disposed in each laboratory. There is additionally a microprocessor disposed in each laboratory for receiving information concerning the laboratory from the respective sensing means and the controller in order to maintain the laboratory in a predetermined state, and to provide information about the laboratory to the controller.

Abstract: A fume hood controller and method which compensates for resistance to air flow through a by-pass opening that exists due to a grille or louvre overlying the by-pass opening.

Abstract: In the air flow control system of a laboratory building module, pressurization of corridors and other residual areas can be maintained neutral in relation to the outdoors by balancing the entire intake or supply flow rate and the entire exhaust rate. The laboratory rooms have various forms of fume hoods whose face velocities at their sash openings is regulated variously, either in response to sash position transducers or in response to face velocity sensors. Fume hoods having two sashes provide two sash-position transducers whose composite output represents the sash opening. A fume hood that relies on sensing of face velocity for correlating its exhaust flow rate with its sash opening utilizes the composite output of multiple face velocity sensors. Exhaust flow rates of fume hoods are regulated so as to increase more rapidly for greater sash openings than for smaller sash openings.

Abstract: An apparatus for mounting a device for determining the position of a sliding sash door in a laboratory fume hood in the track of the sash door. This apparatus securely and permanently mounts the sensing means in the track even after exposure to corrosive and noxious chemicals such as MEK. This apparatus is thin enough to not to interfere with the operation of the sash door yet rigid enough to protect the sensing means. The apparatus includes a PVC base having a generally "I" shaped cross section with two recesses formed by two end portions and a middle portion of the base. The sensing means is located in one of these recesses and is secured therein by a first adhesive means. The PVC base and sensing means are attached to the track of the fume hood by a second adhesive means located in the other recess in the base. Both adhesive means are comprised of a high performance acrylic adhesive which is splash resistant to MEK.

Abstract: In the air flow control system of a laboratory building module, pressurization of corridors and other residual areas can be maintained neutral in relation to the outdoors by balancing the entire intake or supply flow rate and the entire exhaust rate. The laboratory rooms have various forms of fume hoods whose face velocities at their sash openings is regulated variously, either in response to sash position transducers or in response to face velocity sensors. Fume hoods having two sashes provide two sash-position transducers whose composite output represents the sash opening. A fume hood that relies on sensing of face velocity for correlating its exhaust flow rate with its sash opening utilizes the composite output of multiple face velocity sensors. Exhaust flow rates of fume hoods are regulated so as to increase more rapidly for greater sash openings than for smaller sash openings.

Abstract: Apparatus for controlling the air flow through a fume hood to maintain a predetermined average face velocity through an uncovered portion of an opening of a fume hood of the type which has at least one movable sash door adapted to cover the opening as the fume hood sash door is moved. The apparatus detects the position of each moveable sash door and calculates the size of the uncovered portion of the opening, measures the actual flow of air through the exhaust duct, and varies the flow of air through the exhaust duct responsive to door position signals and the actual flow signal for controlling a flow modulating means to maintain the predetermined average face velocity through the uncovered portion of the opening.

Abstract: A sensing means for determining the absolute position of one or more structures such as doors, windows or the like that are moveable in sets of tracks. Apparatus comprises an electrical switching means having an elongated electrical resistance means with a predetermined resistance value per unit length located adjacent to one of the sash doors, actuator means associated with the sash doors for operating said switching means, circuit means adapted to provide a substantially constant electrical current through a portion of said resistance means between an end portion of said resistance means and the nearest switch location, said circuit means thereby providing a voltage signal having a magnitude that is proportional to the distance between said end portion of said resistance means and the switch location.