Abstract: A microorganism culture plate and methods for its fabrication and use is provided. The culture plate comprises a splash-guard that attaches to an upper rim of the plate. The splash-guard forms a removable, hermetic seal with the rim to prevent liquid media or other fluids from spilling or leaking out of the plate. The splash-guard as defined by a frame of film, according to an embodiment, has an aperture situated over a volume of the culture plate.

Abstract: The present invention includes a cell cultivating flask and a method for growing cells within the cell cultivating flask which is configured such that a user can directly access the individual trays or cell growing areas within the cell cultivating flask. Basically, the cell cultivating flask includes a cover located on top of an intermediate tray which is located on top of a bottom tray. The intermediate tray and bottom tray each have a bottom plate and side walls that define a cell growth area. And, the cover and intermediate tray each have a neck with an opening formed therein which enables a user to directly add or remove a cell cultivating media to or from each of the cell growth areas in the intermediate tray and the bottom tray. The cell cultivating flask may have more than one intermediate tray.

Abstract: The present invention provides a hybridization chamber that contains a built-in mechanism for saturating the air within the chamber when sealed thereby preventing drying of the liquid sample. The hybridization chamber is defined by matching top and bottom clam-shell like halves that, when brought together, are sealed by an o-ring and clamping device. The chamber is equipped with a liquid reservoir, the liquid from which will serve to saturate the volume of air sealed within the hybridization chamber. A saturated atmosphere within the chamber prevents evaporation of the sample.

Abstract: A microorganism culture plate and methods for its fabrication and use. The culture plate comprises a splash-guard that attaches to a upper rim of the plate. The splash-guard forms a removable, hermetic seal with the rim to prevent liquid media or other fluids from spilling or leaking out of the plate.

Abstract: The present invention includes a cell cultivating flask and a method for growing cells within the cell cultivating flask which is configured such that a user can directly access the individual trays or cell growing areas within the cell cultivating flask. Basically, the cell cultivating flask includes a cover located on top of an intermediate tray which is located on top of a bottom tray. The intermediate tray and bottom tray each have a bottom plate and side walls that define a cell growth area. And, the cover and intermediate tray each have a neck with an opening formed therein which enables a user to directly add or remove a cell cultivating media to or from each of the cell growth areas in the intermediate tray and the bottom tray. The cell cultivating flask may have more than one intermediate tray.

Abstract: A laboratory flask includes a body and a canted neck at one end joined to the main surface by an inclined ramp. The neck diameter is maximized and along with the ramp allows the user excellent accessibility to the four corners of the flask end wall with a pipette and to the four corners of the growing surface with a scraper.

Abstract: A filter for a centrifuge tube including a pressure filter for separating a mixture under centrifugal force. The filter tube is adapted to fit within the upper portion of a standard plastic centrifuge tube. The filter tube has a pressure filter at its lower end and an opening at its upper end adapted to be sealed by a cap extending from the centrifuge tube to hold the filter tube securely in position within the centrifuge tube. The filter tube is filled with a mixture of permeable and non-permeable materials and when the composite centrifuge tube and filter tube is spun in the centrifuge, the centrifugal force causes the permeable materials to flow through the filter and collect in the bottom of the centrifuge tube while the non-permeable materials are retained in the filter tube.

Abstract: A system for transferring liquid to a multi-well culture plate which includes a machine having a frame upon which is mounted a platform for supporting the culture plate, a transfer plate above the platform and a piston plate above the transfer plate. The transfer plate includes a plurality of chambers closed at the top by a diaphragm. The open bottoms of the chambers may be immersed in a source of the liquid to be transferred on the platform such as a culture plate or reservoir, and the piston plate may be selectively inserted into the chambers of the transfer plate against the diaphragm so that the liquid may be drawn into the chambers from the source. The liquid thereafter may be discharged from the chambers into a multi-well culture plate placed on the platform.

Abstract: A tissue culture cluster dish having a multi-well base and detached cover. The cover may be mounted on the base in a partially open position to provide access to the wells by a pipette or other instrument operated by the user while the cover acts as a shield against airborne contaminants.

Abstract: A tissue culture cluster dish having a multi-well base and detached cover. The cover may be ounted on the base in a partially open position to provide access to the wells by a pipette or other instrument operated by the user while the cover acts as a shield against airborne contaminants.

Abstract: A container for growing anaerobic microorganisms having a cone-shaped dish and matching cone-shaped cover that define between them a prescribed volume. An overflow trough surrounds the dish, and the peripheries of the dish and cover seal together by excess agar medium carrying the organisms squeezed from the volume as the cover is applied to the dish. The colonies of organisms can be viewed either through the dish or cover because each is transparent.

Abstract: A photograph display stand having two frame assemblies which are hinged together along their adjacent side edges so that one frame assembly may be moved 360.degree. with respect to the other. Each frame assembly is composed of two identical transparent members arranged back to back and through each a photograph may be viewed.

Abstract: Power feed apparatus adapted for driving the feed screw of a milling machine including a gear mounted on the end of the feed screw, a second gear driven by a reversible electric motor, an idler gear rotatably mounted on a lever for movement into and out of engagement between the first two gears, an adjustable pressure lock for retaining the lever in the position which keeps the idler gear engaged, and a housing mountable on the milling machine table supporting the motor, lever and pressure lock.

Abstract: A picture display device includes an array of picture frames hinged together, as by an endless belt, in which the inner ends of the frame sections are attached to the endless belt. The frames radiate outwardly from the belt and are arrangeable in a pair of side-by-side packs in which the frames in each pack lie flat against each other, and in which the inner frame sections of one pack abut the inner frame sections of the other pack. A support is provided to hold the packs in side-by-side relation in a manner which permits advancement of and guides the frames from one pack to the next. The frames and the support are arranged so that advancement of a frame from the end of one pack to the beginning of the next pack causes all of the other frames in the array to advance an incremental amount. Means also are provided for biasing each of the frames in each pack flat against each other as well as to bias one of the packs against the other of the packs.