Apparatus for automatic chromatography for laboratory use; Automated immunodetection system comprised of a vacuum manifold and one or more membrane holders for laboratory use; Centrifugal metering pumps; Chromatography apparatus for laboratory use; Chromatography columns for laboratory use; Chromatography columns for use in purification in the laboratory; Controlled volume pumps; Filters for use in laboratory equipment the biopharmaceutical industry; Flow cytometers and flow-based analyzers providing cell and particle analysis, detection, or counting for scientific, laboratory, and general research uses; Flow meters; Gas chromatography apparatus for laboratory use; Gasifiers for laboratory use; Glass tubes for scientific purposes; High-pressure pumps for proportioning and testing purposes; Laboratory consumables, namely, pipette tips; Laboratory filters; Laboratory storage tubes; Liquid chromatography apparatus for laboratory use; Mechanical devices, namely, dispensers of preset portions of fluids, solid granules and powder for dosing purposes, all not for medical use; Metering orifices, namely, orifice plates for metering or controlling the flow rate of liquids; Scientific apparatus and instruments, namely, chromatography columns for use in purification in the laboratory and parts and fittings therefor; Scientific apparatus and instruments, namely, fluid handling device used for disposable bioprocessing applications and parts and fittings therefor; Scientific apparatus and instruments, namely, ultra-high vacuum chambers; Scientific instrumentation for measuring fluid flow and dispensing measured amounts of liquids and gasses for laboratory use; Scientific instruments, namely, electronic analyzers for measuring, testing and detecting contaminants and environmental pollutants; Scientific measuring instruments, namely, conductivity meters