Abstract: An optical chemical test system and method detects information from areas of a chemical test component in the field of view of a color camera. The chemical test component can be a card or a strip and has a color change test area that changes in appearance when subjected to a target chemical in solution, which changes are detected by the color camera and used by an electronic control device to calculate a concentration value for the target chemical. Other areas of the chemical test component, when provided, calibrate the concentration value by providing further data that is recognized by the color camera and used by the electronic control device for calibration. The chemical test component can include features such as one or more indicia or locations for optical coding, card or strip identifiers and authenticators, one or more reference color areas and one or more reference white areas.

Abstract: An optical chemical test system and method detects information from areas of a chemical test component in the field of view of a color camera. The chemical test component can be a card or a strip and has a color change test area that changes in appearance when subjected to a target chemical in solution, which changes are detected by the color camera and used by an electronic control device to calculate a concentration value for the target chemical. Other areas of the chemical test component, when provided, calibrate the concentration value by providing further data that is recognized by the color camera and used by the electronic control device for calibration. The chemical test component can include features such as one or more indicia or locations for optical coding, card or strip identifiers and authenticators, one or more reference color areas and one or more reference white areas.

Abstract: A chain of custody device is provided. The chain of custody device includes a strap for attaching to a body part of a patient. The chain of custody device further includes a receiver connected to the strap and operable to be connected to a physiological monitoring system via a cable. The receiver stores an identifier that is readable by the physiological monitoring system and is usable by the physiological monitoring system to verify that the physiological monitoring system is connected to a correct chain of custody device. The chain of custody device further comprises a security means for preventing undetected removal of the strap and/or receiver. A system comprising the physiological monitoring system and the chain of custody device, and a method for using such system are also described.

Abstract: An apparatus dispenses detergent into a warewasher from a reservoir wherein a flow control device controls the flow of the detergent. A sensor measures the electrical conductivity of water within the warewasher and produces a conductivity measurement. A controller operates the flow control device in a first mode in which the quantity of detergent dispensed into the warewasher is determined in response to the electrical conductivity of the water. If the conductivity measurement is determined to be unreliable, the controller operates in a second mode in which a predefined quantity of detergent is dispensed into the warewasher. The reliability of the conductivity measurement is determined based on the amount that the conductivity changes upon detergent being added to the warewasher.

Abstract: An apparatus dispenses detergent into a warewasher from a reservoir wherein a flow control device controls the flow of the detergent. A sensor measures the electrical conductivity of water within the warewasher and produces a conductivity measurement. A controller operates the flow control device in a first mode in which the quantity of detergent dispensed into the warewasher is determined in response to the electrical conductivity of the water. If the conductivity measurement is determined to be unreliable, the controller operates in a second mode in which a predefined quantity of detergent is dispensed into the warewasher. The reliability of the conductivity measurement is determined based on the amount that the conductivity changes upon detergent being added to the warewasher.

Abstract: A modular chromatography column heating and temperature control system includes a heater base module with a compartment for the chromatography column that includes a heater plate. A set of heater blocks is provided in pairs, each heater block having opposite main faces in which are formed channels that match chromatography columns of different diameters. The heater blocks are mounted in pairs on the heater plate with the chromatography column held between them in matching channels on the two adjacent main faces of the heater blocks. An appropriate number of pairs of heater blocks are mounted to the heater plate so that the pairs of heater blocks cover as much of the length of the chromatography column as desired. The set of available pairs of heater blocks may include heater blocks of different lengths, so that appropriate selections of pairs of heater blocks can be made to best match the length of the chromatography column.

Abstract: The free fatty acid content of an edible oil is measured by a system including a supply of a carrier solution containing an organic solvent for dissolving the oil and a color indicating reagent and an oil sample supply connected to a flow-through colorimetric detector via a sample injection valve. The sample injection valve is movable between a load position wherein a sample stream of the oil is routed to a sample waste collector via a sample loop and a stream of the carrier solution passes through the detector via a carrier solution conduit and a measure position wherein a slug of the oil in the sample loop is introduced into the carrier solution conduit and mixed with the carrier solution prior to passing through the detector. The free fatty acid in the oil reacts with the color indicating reagent in the carrier solution to produce a color of an intensity indicative of the free fatty acid content which is measured by the detector.

Abstract: The peroxide content of a non-aqueous medium is measured by a system including separate supplies for two carrier solutions, a first one containing an acid for acidifying the sample and the second containing an iodide compound for reacting with the peroxide(s) in the sample and producing a free iodine ion, such as I.sub.3.sup.-, and a flow-through detector, such as a colorimetric device. The sample and first carrier solution streams are controlled by a sample injection valve which is movable between a load position wherein the sample stream is routed to a sample waste collector via a sample loop and the first carrier solution stream passes through a first carrier solution conduit and is combined with a stream the second carrier solution prior to passing through the detector and a measure position wherein a slug of the sample is introduced into the first carrier solution conduit, mixed with the first carrier solution and combined with the second carrier solution prior to passing through the detector.

Abstract: Presteralized manifolds are provided which are designed for sterile packaging and single-use approaches. Disposable tubing and flexible-wall containers are assembled via aseptic connectors. These manifolds are adapted to interact with other equipment which can be operated by a controller which provides automated and accurate delivery of biotechnology fluid. The manifold also can be used in conjunction with one or more sensors such as pressure and conductivity sensors that interact with the controller or are connected to a separate user interface. An aseptic environment obtains avoiding or reducing cleaning and quality assurance procedures.