Abstract:
A climate controlled cabinet with integrated transport device is provided with a movable carrier plate for receiving the storage towers. The carrier plate can be moved to provide better access to the interior walls and floor of the device, and/or it can be moved to shake the contents of the objects to be stored.
Abstract:
An apparatus for controlling a microtome (2) and a cooling chamber (4) provided therefor is disclosed. Control is accomplished by way of a single control unit (12, 18) that integrates both operating elements (30) for the microtome (2) and operating elements (32) for the cooling chamber (4).
Abstract:
The invention pertains to a safety cabinet with an interior that is enclosed by a housing and a housing front side with a work opening that can be closed with a height-adjustable window. The safety cabinet contains an operating unit for controlling device functions which is integrated into the housing. The operating unit comprises at least one rocker button, the button assignment of which changes depending on the operating state of the safety cabinet in such a way that a certain device function can be controlled in the respective operating state by actuating a button of the rocker button.
Abstract:
The invention concerns an incubation and storage device, in particular for specimens of organic material, in which the boundary surfaces of the inner space of the incubation and storage device are thermally connected to heat transfer elements attached on the outside and the heat transfer elements have a liquid heat carrier circulating through them, where means for cooling and heating the heat carrier are provided and the heating and/or cooling of the inner space takes place indirectly via the liquid heat carrier. Here a heat transfer means for heating and a heat transfer means/evaporator for cooling the heat carrier can be provided. The heat transfer elements in accordance with the invention can, for example, be box shaped or designed as tubular coils. Through the use of a heat carrier the necessary temperature constancy inside the device is easy to reach and easy cleaning of the inner space becomes possible. The combined indirect cooling and heating is especially suitable for inner temperatures close to ambient temperature.
Abstract:
The present invention relates to a method and apparatus for controlling the escape of aerosols generated from the operation of a flow cytometer. Such aerosols may contain, for example, infectious agents that may pose a safety risk to the operator of the flow cytometer. The apparatus of the invention comprises a biological safety cabinet coupled with a means for producing air flow and filtration. The apparatus of the invention is designed to fit onto the face of a flow cytometer, thereby preventing the escape of aerosols.
Abstract:
A generally closed lab hood having an opening closable by a movable door and connected to a variable-throughput suction source has a vent-control system having a sensor for detecting a velocity of flow of air into the hood and for generating an output corresponding to the detected velocity. A controller connected to the sensor and to the variable-throughput suction source receives the output and operates the suction source to set throughput of the source at a level corresponding to the output so that as the detected velocity increases the throughput of the suction source is increased and vice versa. The controller includes a sensor tube having an inner end opening into the hood and an outer end opening outside the hood and a sensor in the tube for detecting the velocity of air-flow therethrough. This tube is offset from the opening. The controller operates proportionally to set the throughput of the suction source relative to the air-flow velocity.
Abstract:
A container for use in storing specimens such as dried insects, pressed plants, documents, fabric, art work, and other archival material is sealed off from the ambient atmosphere by placing sealing cement between the sides, top and bottom of the container. In this manner the specimens are kept in an environment which is protected from ambient factors such as air and other gasses, dust, humidity, ultraviolet, and other factors including the common acid degassing of wood construction storage systems which would tend to deteriorate such specimens. A window is provided to enable viewing of the specimens in the container, this window being fabricated of an ultraviolet blocking material. While the interior of the container is effectively sealed around the window, a simple latching (and unlatching) device is provided for retaining the window in position such that the window can be readily lifted off the container in replacing specimens or installing new specimens in the container.
Abstract:
A testing apparatus which has a test chamber located within a chamber frame. The apparatus includes a computer controlled ergonomic system which can vary the temperature of the test chamber. Within the test chamber is an adjustable ceiling that can be moved to vary the volume of the chamber. Extending around the outer edge of the ceiling is an inflatable seal which seals the chamber when the ceiling is moved to a new position. The ceiling and walls have a plurality of adjustable vents that direct fluid flow into the chamber. The doors of the apparatus are each constructed from an inner wall that is coupled to an outer wall by a plurality of floating joints. The floating joints allow the inner wall to contract or expand relative to the outer wall without creating a corresponding stress on the outer wall or the joints. To prevent an operator from prematurely opening a door after temperature cycling, the door locks are computer controlled so that the doors cannot be unlocked until the test chamber reaches an operator safe condition. The computer also prevents the ceiling from being adjusted until the front doors are opened and the table is pulled out of the chamber. One door also has an override button that allows the operator to open the door from the inside of the test chamber. Additionally, the testing apparatus includes a vibration table which can be pulled to a position outside of the test chamber. The table has a brake and shock absorbers that prevent an undesirable shock to the test parts when moving the table into and out of the test chamber.
Abstract:
A testing apparatus which has a test chamber located within a chamber frame. The apparatus includes a computer controlled ergonomic system which can vary the temperature of the test chamber. Within the test chamber is an adjustable ceiling that can be moved to vary the volume of the chamber. Extending around the outer edge of the ceiling is an inflatable seal which seals the chamber when the ceiling is moved to a new position. The ceiling and walls have a plurality of adjustable vents that direct fluid flow into the chamber. The doors of the apparatus are each constructed from an inner wall that is coupled to an outer wall by a plurality of floating joints. The floating joints allow the inner wall to contract or expand relative to the outer wall without creating a corresponding stress on the outer wall or the joints. To prevent an operator from prematurely opening a door after temperature cycling, the door locks are computer controlled so that the doors cannot be unlocked until the test chamber reaches an operator safe condition. The computer also prevents the ceiling from being adjusted until the front doors are opened and the table is pulled out of the chamber. One door also has an override button that allows the operator to open the door from the inside of the test chamber. Additionally, the testing apparatus includes a vibration table which can be pulled to a position outside of the test chamber. The table has a brake and shock absorbers that prevent an undesirable shock to the test parts When moving the table into and out of the test chamber.
Abstract:
An improvement in an apparatus for carrying out chemical reactions is disclosed. The apparatus includes a housing defining a vacuum chamber, with a reactor located within the vacuum chamber. The improvement comprises a device disposed within the housing having a high-pressure outlet tube for engagement with the reactor, a bypass for placing the high-pressure outlet tube in fluid communication with the outside of the vacuum chamber, an orifice for placing the high-pressure outlet tube in fluid communication with the vacuum chamber and at least one valve for selectively opening or closing the bypass and the orifice. The device may be engaged and disengaged with the reactor by a manual shaft and gear arrangement for operating the reactor at higher pressures relative to the normal vacuum operation.