Abstract: A method for washing and vacuum drying long necked laboratory flasks. The apparatus includes a cabinet which presents a washing and drying compartment and a pump and rotary spray arm. A special rack which can be rolled into and out of the compartment includes a central manifold and a plurality of distribution arms extending radially from the manifold. Upright spindle tubes extend from the distribution arms to receive the inverted flasks such at that the tubes extend through the narrow necks of the flasks with the open ends of the tubes located within the bodies of the flasks. A diaphragm coupling allows water to be pumped to the manifold for delivery to the spindle tubes during washing and rinsing cycles. The tubes spray the water directly inside of the flask bodies for thorough washing and rinsing. A vacuum conduit extending from the manifold carries a seat which engages a gasket to couple the manifold with a vacuum blower when the rack is moved into the cabinet.

Abstract: A method and apparatus for purifying water to two different laboratory quality levels of purity, both of which are made available for dispensing. Ordinary tap water is prefiltered and treated by reverse osmosis to produce virtually salt free product water which is made available to a cabinet mounted faucet. The product water is delivered to a system of polishing cartridges which produce polished water and supply it to a special hand held dispensing gun. A recirculation pump operates to recirculate the water in the polishing system to prevent it from standing and eliminate the need for water storage. The product water is also recycled through the reverse osmosis cartridge. Some of the reject water from the RO cartridge is directed to a drain, but most of the reject water is recycled to conserve water. A microprocessor based control system monitors and displays the water quality and other conditions and generates an alarm if an abnormal condition arises.

Abstract: A method and apparatus for washing and vacuum drying long necked laboratory flasks. The apparatus includes a cabinet which presents a washing and drying compartment and a pump and rotary spray arm. A special rack which can be rolled into and out of the compartment includes a central manifold and a plurality of distribution arms extending radially from the manifold. Upright spindle tubes extend from the distribution arms to receive the inverted flasks such at that the tubes extend through the narrow necks of the flasks with the open ends of the tubes located within the bodies of the flasks. A diaphragm coupling allows water to be pumped to the manifold for delivery to the spindle tubes during washing and rinsing cycles. The tubes spray the water directly inside of the flask bodies for thorough washing and rinsing. A vacuum conduit extending from the manifold carries a seat which engages a gasket to couple the manifold with a vacuum blower when the rack is moved into the cabinet.

Abstract: An improved laboratory fume hood is the subject of the present invention. A cabinet structure presents an enclosed work area defined by sidewalls, a back wall, and an access opening. Each of the sidewalls presents first and second planar surfaces disposed in spaced parallel planes and interconnected by a third surface disposed at an acute angle relative to the plane of one of the first two surfaces. This third surface provides a mounting area for hose connectors which increases the effective work area and reduces the danger of clothing catching on the hose connectors. A vertically mounted sash covers the access opening and is movable between a lowered closed position and a raised open position. A fixture mounted in front of the sash provides means for mounting a light source. A removable cover on the side of the sash opposite the work area cooperates with the sash to define an air duct for directing add air into the access opening.

Abstract: A laminar airflow biological safety cabinet apparatus is disclosed which is convertible by the user for changing the airflow pattern through the cabinet in order to meet different specialized conditions encountered in laboratory work with potentially hazardous biological specimens. Adjustable damper structure is provided adjacent the air outlet of the cabinet for simultaneously varying the amounts of air discharged and drawn into the cabinet, and the laminar flow of downwardly directed air through the work compartment thereof. An air filter is located immediately below the work surface of the cabinet and upstream of the air fan for removing contaminants from the air.