Abstract: In one embodiment, a system for analytical testing comprises a test cartridge for use in conducting an analytical test including a test medium and an RFID device. An encoding device is provided adapted to preprogram the RFID with information relating to the test. An analytical detection device including a RFID transceiver adapted to transfer data to and from the RFID device is coupled to test detection instrumentation adapted to analyze the test medium in response to the information relating to the test.

Abstract: An improved biological aerosol chemiluminescent (CL) detection system having optimal sensitivity and a method for using the same in detecting the presence of biological materials in an aerosol sample. The detection system comprises a cyclone aerosol sampler, a CL reagent injector, and a luminometer, wherein the CL reagent injector is mated with the cyclone aerosol sampler so as to deliver/introduce CL reagent thereto. The inner surface of the cyclone aerosol sampler and the inner surface of the CL reagent injector are fabricated from materials that are free of metals that would initiate a CL-based reaction with a CL reagent to be employed therein so as to provide a CL reagent path free of these metals. The entire CL reagent path in the biological aerosol CL detection apparatus is comprised of these materials. A method for determining the suitability of materials for use throughout the CL reagent path of the biological CL detection system is also taught.

Abstract: A dry reagent prepared by lyophilizing a labelled ligand-immobilized receptor complex or a labelled receptor-immobilized ligand complex is, on rehydration, useful for detecting analytes in samples in a variety of displacement assays.

Abstract: A safety pipette is characterized in that an openable seal (6) is present within the pipette, necessitating the use of a forcing element (9) to hold the seal in an open position in order to use the pipette. Pipette inserts provide the seal in standard pipettes. Pipette adaptors provide the necessary forcing element. Pipette supports or nosepieces for pipetting devices are modified with a pipette adapter (8) allowing the use of safety pipettes. The forcing element is a pin, or rod, firmly made part of a nosepiece, or an adaptor that moves a flap or ball within a pipette away from a closed position into an open position, allowing air flow through the safety pipette. Kits comprise modified nosepieces or replacement elements thereof with safety pipettes per se, or with safety pipette inserts, and kits comprise pipette adaptors with safety pipettes or safety pipette inserts.

Abstract: A disposable pipette comprises a tube having first and second ends, a porous barrier plug mounted in the tube at the second end, and a sealing device mounted in the tube between the second end and the barrier plug. The sealing device has a closed position and an open position into which it must be forced. The pipette further comprises a closure mounted in the tube between the second end and the sealing device, wherein the first end is immersed in a fluid, when the sealing device is forced to the open position and when the second end is connected to a suction, fluid is suctioned into the pipette. A safety pipette adaptor comprises an annular sleeve for mounting on the suction end of a pipette. A rod is provided in the sleeve in the direction of an axis for insertion into a pipette or pipette insert and is capable of displacing a sealing device in a pipette or pipette insert into an open position.

Abstract: A hyperdermic syringe having a plunger which separates from a piston inside a barrel of the syringe after a downward stroke of the plunger preventing reuse of the syringe. The plunger breaks breakaway portions mounted inside the piston when pushed downward to unload the syringe effectively separating the plunger from the piston and destroying the syringe, preventing the piston from being withdrawn for the purpose of reloading the syringe. In another embodiment, a connector is used to releasably engage a plunger to a piston. Downward movement of the plunger causes upward extensions of the connector to move toward each other and lock together. The plunger disengages from the connector and piston after the extension lock together. A modified tip portion of a barrel containing a valve ball and valve flaps may be used to prevent the syringe from being used after a single use discharging medicinal fluid from the syringe. The valve ball blocks flow of medicinal fluid into the syringe after use of the syringe.

Abstract: A paint strainer of conical configuration provided with peripherally-spaced discharge openings in the side wall above the tip, a secondary opening located between the peripherally-spaced openings, and a discharge opening at the tip located in the side wall between the secondary openings and the tip. The openings are covered with mesh.

Abstract: A dispenser for conical strainers having diametrically-projecting ears comprising elements defining a vertically-elongate, tubular structure open at its lower end and of a predetermined cross section wherein the distance between opposite corners exceeds the distance between the ears at diametrically-opposite sides of the strainers to be dispensed therefrom and supports at the open lower end of the structure located in diagonal corners comprising a single support positioned diagonally of one of the corners and spaced, parallel supports positioned diagonally of the other of the corners such as to support the rim of a strainer with its ears disposed in said corners and wherein the corner at the latter corner side is apertured to expose the ears at that corner.

Abstract: A paint strainer in the form of a frustoconical structure, to the lower smaller diameter open end of which is applied a screening material with a portion crossing the open end lying in a plane perpendicular to the axis of the structure and a portion folded over the edge of the opening onto the arcuate surface of the structure and bonded thereto.

Abstract: Laminates of resinous polymers of olefins and elastomeric, open celled polyester urethane foams and method and apparatus of their production. Examples of resinous polymers include polyethylene, copolymers of ethylene and propylene, polypropylene, polystyrene and impact polystyrene. Optionally, the foam can be provided with a plasticized vinyl or fabric layer, opposite the surface to which the polyolefin is applied.

Abstract: A paint stirrer paddle comprising a long, narrow, corrosion-resistant metal blade having lengthwise thereof portions displaced from the plane of the blade, said portions being concavo-convex in transverse sections, of different length and of different width, and the part of the blade containing the displaced portion of lesser width and length constituting the handle of the paddle.

Abstract: A paint filter comprising a conical wall structure of sheet material embodying top and bottom portions and intermediate the top and bottom portions diametrically disposed wall openings covered with a foramenous webbing and intermediate the wall openings wall portions which connect the top and bottom portions of the structure characterized in that one of the wall portions of the structure intermediate the wall openings contains a secondary opening also covered with said foramenous webbing which is located substantially at the apex of the bottom portion.

Abstract: A paint strainer comprising a conical receptacle having a truncated lower end within which there is an upwardly concave bottom wall, the convex interior side of which constitutes the bottom of the receptacle and openings in the conical wall covered with a fine mesh gauze. The openings extend down to the base of the interior convex bottom wall.

Abstract: A dispenser for conical paint strainers comprising a vertically elongate hollow structure having an open lower end and front and back supports at the open lower end for removably supporting a stack of cones in the structure with their apices uppermost for removal of cones one or more at a time while leaving the remaining cones supported therein.

Abstract: Powder coating a substrate with a polyolefin or preferably a polyolefin-polycarbonamide blend before contacting the substrate with a plastic resin creating a plastic-substrate seal, inhibits liquid and vapor transmission through the seal. The application of this invention to battery terminal bushings prevents unsightly corrosion about the battery terminal which is caused by "wicking" of battery acid.