Abstract:
A cartridge for chromatography separations comprises a housing; at least a first and a second chromatography column at least partially passing through the housing, each chromatography column comprising a first and a second end fitting operable to connect the chromatography to external tubing of a chromatography system.
Abstract:
Method and apparatus for providing price quote streams to a multiplicity of customers in an online asset trading system. The invention allows providers to establish, maintain and revise only one shareable price quote stream (or, alternatively, just a relative few number of shareable price quote streams) for each currency pair and have that one shareable price quote stream (or that relative few number of shareable price quote streams) automatically converted to customer-specific price quote streams and distributed to a large number of customers simultaneously, without consuming a correspondingly large amount of additional time or resources on the providers' trading system. Each customer-specific price quote stream contains quotes having order size parts that are derived from customer-specific factors, such as the customer's credit limit and/or the customer's requested order size.
Abstract:
A method for monitoring a fluidic system of a liquid chromatography system is characterized by: (a) drawing a fluid into a syringe pump; (b) configuring a valve so as to fluidically couple the pump to either a fluidic pathway through the fluidic system or to a plug that prevents fluid flow; (c) causing the syringe pump to progressively compress the fluid therein or expel the fluid to the fluidic pathway, while measuring a pressure of the fluid; (d) determining a profile of the variation of the measured pressure; (e) comparing the determined profile to an expected profile that depends upon the fluid; and (f) providing a notification of a sub-optimal operating condition or malfunction if the determined profile varies from the expected profile by greater than a predetermined tolerance.
Abstract:
A cartridge for chromatography separations comprises a housing; at least a first and a second chromatography column at least partially passing through the housing, each chromatography column comprising a first and a second end fitting operable to connect the chromatography to external tubing of a chromatography system. Connection fittings protruding outside of the housing at each end of each column enable fluidic connection to a chromatograph plumbing system and/or mass spectrometer detector. The cartridge may comprise heaters and temperature sensors and optional sensors to monitor fluid flow rate or pH. A passive identification feature, e.g., a barcode or RFID module may identify the cartridge and its associated chromatography methods to external software. Further, an on-board memory module and controller chip may be used to actively record computer-readable module information, including module history information, the information transferable through a standard interface, such as a universal serial bus (USB) port.
Abstract:
A system for providing a solvent or reagent to a liquid chromatography system comprises: a valve comprising a common port and a plurality of other ports, configurable such that the common port may be fluidically coupled to any one of the other ports; a pump fluidically coupled to the common port of the valve; a plug configured to block flow through a first one of said other ports of the valve; a container containing the solvent or reagent, said container fluidically coupled to a second one of said other ports of the valve; a fluid tubing line having a known resistance to fluid flow fluidically coupled to a third one of said other ports of the valve; and a pressure gauge configured to measure fluid pressure within the pump, wherein the solvent or reagent is provided to the liquid chromatography system by a fourth one of the other ports.
Abstract:
An apparatus for coupling a liquid chromatography column comprising an end fitting to a tubing comprises: at least one body member comprising at least one chamber; a first spring within the at least one chamber, the first spring configured so as to apply a first force to the tubing towards the column end fitting; a second spring within the at least one chamber, the second spring configured to apply a second force to a deformable sealing member towards the column end fitting; and a pushing and latching mechanism configured to push the at least one body member and the first and second springs towards the column end fitting.
Abstract:
Method and apparatus for providing price quote streams to a multiplicity of customers in an online asset trading system. The invention allows providers to establish, maintain and revise only one shareable price quote stream (or, alternatively, just a relative few number of shareable price quote streams) for each currency pair and have that one shareable price quote stream (or that relative few number of shareable price quote streams) automatically converted to customer-specific price quote streams and distributed to a large number of customers simultaneously, without consuming a correspondingly large amount of additional time or resources on the providers' trading system. Each customer-specific price quote stream contains quotes having order size parts that are derived from customer-specific factors, such as the customer's credit limit and/or the customer's requested order size.