Apparatus and method for rapid analyses of plurality of samples

  • US 4,013,413 A
  • Filed: 07/10/1975
  • Issued: 03/22/1977
  • Est. Priority Date: 07/10/1975
  • Status: Expired due to Term
First Claim
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1. An apparatus for rapidly analyzing a plurality of fluid samples, comprising a sample flow system for introducing samples into the apparatus, a reaction flow system into the apparatus, a reaction flow system for introducing reagent and sample solvent into the apparatus and for reacting reagent and sample and analyzing the reacted sample, said reaction flow system having means for providing a continual flow of fluid at a constant rate through said system when the apparatus is in operation, and a stream sampling valve common to both the sample flow system and the reaction flow system for transferring a volume of sample only from the sample flow system to the reaction flow system, comprising a plurality of four-way valves, each having a plurality of ports and an element slidably mounted for movement within said valves, said elements being provided with fluid conducting conduits adapted to register with the aforesaid ports to control the flow of fluid through said valves, and a plurality of coils mounted externally of said valves to transport fluids to and from the valves, thereby providing means for washing out the sample flow system while the valve is injecting a sample into the reaction flow system.

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