Abstract: A modular laboratory system that facilitates lower cost installation and reconfiguration of laboratory furniture includes a core unit adapted for releasably docking with a mobile modular laboratory furniture unit. The core unit includes a top member supported on a frame and at least one chase-way extending upwardly from the top member. The chase-way includes walls defining the sides of an enclosure for plumbing connecting a service fitting mounted through a wall of the chase-way to a coupling at a top end of the chase-way, whereby a service supply line can be connected to the coupling to provide service to the service fitting.

Abstract: The present invention relates to biocides. More particularly, the present invention relates to a novel solution that is an effective high level disinfectant biocide. The present invention biocide includes a halide substituted N-succinimide in an aqueous solution in the pH range of 2-6. The biocide also includes N-succinimide as a stabilizer. In some embodiments the biocide may further include an anti-corrosive agent.

Abstract: A low-profile tank and system for mixing dry chemicals with water to form a concentrated hemodialysis solution, the tank having a fluid supply nozzle projecting into a cylindrical side wall of the tank, and a drain connection at an apex of a conical bottom wall of the tank. A cavity having a ramp-like bottom wall extends from the cylindrical side wall of the tank. A venturi eductor provides for transfer of dry chemicals to the tank using compressed air to aspirate the chemicals and deliver them to the tank. A plurality of load cells may be used to measure the weight of the tank and contents. Manual transfer of dry chemicals to the tank is facilitated by the low profile of the tank. A tapered shipping container is provided for nesting when empty.

Abstract: A low-profile tank and system for mixing dry chemicals with water to form a concentrated hemodialysis solution, the tank having a fluid supply nozzle projecting into a cylindrical side wall of the tank, and a drain connection at an apex of a conical bottom wall of the tank. A cavity having a ramp-like bottom wall extends from the cylindrical side wall of the tank. A venturi eductor provides for transfer of dry chemicals to the tank using compressed air to aspirate the chemicals and deliver them to the tank. A plurality of load cells may be used to measure the weight of the tank and contents. Manual transfer of dry chemicals to the tank is facilitated by the low profile of the tank. A tapered shipping container is provided for nesting when empty.

Abstract: Hand-held shirt-pocket portable instrument for quantitative measurement of glucose or analysis in biological fluids. The system accepts a disposable diagnostic reagent test device which has a reagent carrier and mode of identifying to the instrument the reagent lot characteristics. The instrument includes a housing structure having a visual LCD readout, a microprocessor, and photosensing circuitry which measures the change of color of the reagent carrier upon reaction in the reacting chemistry of the disposable test device. The housing also includes a spring arrangement for actuating a disposable lancet into the skin for generating blood. The disposable diagnostic reagent unit includes a configuration for transporting of the blood in the regent unit. The system includes verification and calibration sequences for the electronics, the chemistry of an unused disposable unit, the presence of a blood sample, and the ambient temperature. The system also provides for storing a plurality of analysis readings.

Abstract: An analytical method and test composition for determining whether an analyte is present in a test sample at a predetermined concentration level by measuring or observing a preselected level of indicator response, e.g., color generation. A subtractive reaction is carried out on the test sample prior to the indicator reaction in order to stoichiometrically and specifically consume a predetermined amount of analyte. The resulting indicator reaction generates the preselected level of indicator response only if the analyte is present at the predetermined concentration level or greater. The subtractive reaction is enzymatically specific for the analyte in the reaction mixture and the amount of analyte consumed can be closely controlled by the amount of a regulating coreactant present at initiation. The method enables the determination of analyte without the need for standards or comparators, e.g., color charts, and therefore is self-indicating.

Abstract: A method of making a multilayer analytical test element comprises providing layers at least one of which is responsive to detect a ligand in a liquid sample, or to detect the ligand binding capacity of the sample, and at least one other layer that is fusible when subjected to sonic energy, arranging the layers one on top of the other together to form a composite blank of layers, subjecting the composite to ultrasonic or laser energy to cut the composite to the desired dimension of the test element and to simultaneously weld the layers at the edges thereof, said energy softening and fusing the fusible layer to thereby bond the layers together.

Abstract: A homogeneous specific binding assay device, a method for its preparation, and a method for its use in determining a ligand, such as antigen, hapten, or antibody, in, or the ligand binding capacity of, a liquid sample. The test device comprises a solid carrier member, such as a fibrous web matrix, e.g., paper, or a polymeric film or gel, incorporated with reagents for a homogeneous specific binding assay system which produces a detectable response, usually an electromagnetic radiation signal, that is a function of the presence or amount of the ligand in or the ligand binding capacity of the sample. Useful homogeneous specific binding assay systems include those involving enzyme substrate labels, enzyme prosthetic group labels, and enzyme labels. The detectable response preferably is a luminescent, fluorescent, spectrophotometric, or colorimetric response, which is measurable by visual observation or instrument means.

Abstract: A homogeneous specific binding assay element, a method for its preparation, and a method for its use in determining a ligand in or the ligand binding capacity of a liquid sample. The test element comprises a solid carrier incorporated with reagents for a homogeneous specific binding assay system which produces a detectable response, usually an electromagnetic radiation signal, that is a function of the presence or amount of the ligand in or the ligand binding capacity of the sample.

Abstract: A homogeneous specific binding assay device, a method for its preparation, and a method for its use in determining a ligand, such as antigen, hapten, or antibody, in a liquid sample. The test device comprises a solid carrier member, such as a fibrous web matrix, e.g., paper, or a polymeric film or gel, incorporated with reagents for a homogeneous specific binding assay system which produces a detectable response, usually an electromagnetic radiation signal, that is a function of the presence or amount of the ligand in the sample.

Abstract: A multilayer analytical element for detecting a ligand in or the ligand binding capacity of a liquid sample of the type having a reagent layer incorporating reagents which are responsive to the ligand in or the ligand binding capacity of the sample to give a detectable response, a radiation diffusing and blocking layer, and a support layer, the improvement wherein the radiation diffusing and blocking layer is (a) interposed between the reagent layer and the support layer; (b) impermeable to the ligand, reagents of the reagent layer, and products of their interreaction; and (c) inert to the ligand, reagents of the reagent layer, and products of their interreaction.

Abstract: Test means, such as a composition, a test device, method of making the test device and process for determining glucose in a body fluid sample are disclosed. More particularly, the contemplated test means comprises glucose oxidase, a peroxidatively active substance, such as peroxidase, and a 3,3',5,5'-tetraalkylbenzidine indicator in an amount sufficient rapidly to produce upon contact of the test means with a predetermined amount of a glucose containing sample, a stable colored reaction product. The preferred benzidine indicator is 3,3',5,5'-tetramethylbenzidine.