Abstract: A method and system is disclosed for streamlined purchase of consumable chromatographic columns and efficient instrument management. Purchase orders for chromatographic columns are entered into based on estimating usage for a fixed period. An initial partial shipment is made of tagged columns as the columns are used. An RFID transmits trigger signals until an order point is reached at which time a new partial shipment is made. This process is repeated until the end of the fixed period. A general control system is in wireless communication with a plurality of apparatuses to ensure prompt and accurate supply of consumables used by the apparatus. As the apparatus uses the consumables, the instrument management system sends indicia from the apparatus to the general control which controls and monitors the number of specific consumables sent to the apparatus.

Abstract: A liquid chromatographic system includes columns, column mounting fixtures to which the columns are mounted, a detector, a collector, a controller and a plurality of RFIDs. A first RFID communicates with the controller and cooperating RFIDs mounted to other components provide information such as the history of components, parameters and the like. They also receive information from sensors relating to the operation of the liquid chromatograph, store the information and transmit it. Moreover, the RFIDs may substitute for hard wiring in many applications and may enable a central computer to control several liquid chromatographic and environmental sample collectors.

Abstract: A liquid chromatographic system includes columns, column mounting fixtures to which the columns are mounted, a detector, a collector, a controller and a plurality of RFIDs. A first RFID communicates with the controller and cooperating RFIDs mounted to other components provide information such as the history of components, parameters and the like. They also receive information from sensors relating to the operation of the liquid chromatograph, store the information and transmit it. Moreover, the RFIDs may substitute for hard wiring in many applications and may enable a central computer to control several liquid chromatographic system.

Abstract: Purchase orders for chromatographic columns and sampler tubing are entered into based on estimating usage for a year. An initial partial shipment is made of tagged columns or tubing as the tubing or columns are used. An RFID transmits trigger signals until an order point is reached at which time a new partial shipment is made. This process is repeated until the end of the year.

Abstract: A liquid chromatographic system includes columns, column mounting fixtures to which the columns are mounted, a detector, a collector, a controller and a plurality of RFIDs. A first RFID communicates with the controller and cooperating RFIDs mounted to other components provide information such as the history of components, parameters and the like. They also receive information from sensors relating to the operation of the liquid chromatograph, store the information and transmit it.

Abstract: A liquid chromatographic system includes columns, column mounting fixtures to which the columns are mounted, a detector, a collector, a controller and a plurality of RFIDs. A first RFID communicates with the controller and cooperating RFIDs mounted to other components provide information such as the history of components, parameters and the like. They also receive information from sensors relating to the operation of the liquid chromatograph, store the information and transmit it. Moreover, the RFIDs may substitute for hard wiring in many applications and may enable a central computer to control several liquid chromatographic systems.

Abstract: A liquid chromatographic system includes columns, column mounting fixtures to which the columns are mounted, a detector, a fraction collection system, a controller and a plurality of RFIDs. A first RFID communicates with the controller and cooperating RFIDs mounted to other components including the fraction collector to provide information such as the history of components, parameters and the like useful in maintaining inventory control and managing the system. They also receive information from sensors relating to the operation of the fraction collector including the location of sample containers.

Abstract: A fluid valve capable of operation in high pressure, bidirectional flowpaths includes a chamber having a circular port in which an axially and radially movable seat ring is engaged by an eccentrically movable valve plug having a spherically convex sealing surface. The plug is mounted to a valve shaft supported in the body for rotation about an axis transverse to, but offset from, the centerline of the port. The seat ring, body and a retainer ring include among them a pair of annular channels for retaining a pair of seals adapted for improving their sealing action with pressure.