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Apparatus for receiving a test specimen and reagent

  • US 4,818,493 A
  • Filed: 04/27/1987
  • Issued: 04/04/1989
  • Est. Priority Date: 10/31/1985
  • Status: Expired due to Term
First Claim
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1. Apparatus for receiving a sample of a fluid to be tested and a test reagent, comprising:

  • (a) slide means having at least one cavity in a top surface thereof for receiving and holding a quantity of fluid to be tested, and(b) body means slideably engaged with said slide means, said slide meand being slidable between a first position relative to said body means and a second position relative to said body means, a bottom surface of said body means facing the top surface of said slide means,(c) said body means having at least one opening therethrough from its top surface to its bottom surface, said opening being in alignment with said at least one cavity in said slide means when said slide means is in said first position whereby fluid to be tested is introduced into said cavity through said opening,(d) said body means also having at least one downwardly opening chamber therein, a lower end of said chamber being in the same plane as the bottom surface of said body means and being substantially open and an upper end of said chamber being substantially closed except for an opening therethrough, said chamber having a downwardly projecting member extending from said upper end of said chamber into said chamber, said chamber being in alignment with said at least one cavity in said slide means when said slide means is in said second position to form a test cell comprising said chamber and said cavity, said member being of a length such that the lowermost end thereof is below the surface of the fluid to be tested and reagent is said test cell, said member being adapted to conduct light from a light source through the fluid and the reagent in said test cell for enabling automated inspection of the fluid and the reagent in said test cell,(e) the top surface of said slide means being in sliding contact with the bottom surface of said body means to form means for removing excess fluid to be tested from said at least one cavity as said slide means moves relative to said body means from said first position to said second position to cause a precise, accurate volume of fluid to remain in said cavity.

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