Methods of and apparatus for analyzing liquids containing crystalloid and non-crystalloid constituents

• US 2,797,149 A
• Filed: 01/08/1953
• Issued: 06/25/1957
• Est. Priority Date: 01/08/1953
• Status: Expired due to Term

• Current Assignee: Leonard T. Skeggs
• Original Assignee: Leonard T. Skeggs
• Inventors: Skeggs, Leonard T.
• Application Number:
  US03/330,211
• Time in Patent Office: 1,629 Days
• US Class Current: 436/53
• CPC Class Codes: F04B 43/082 the tubular flexible member being pressed against a wall by a number of elements, each having an alternating movement in a direction perpendicular to the axes of the tubular member and each having its own driving mechanism
• CPC Class Codes: G01N 35/08 using a stream of discrete samples flowing along a tube system, e.g. flow injection analysis
• CPC Class Codes: Y10S 435/808 Optical sensing apparatus
• CPC Class Codes: Y10T 436/118339 with formation of a segmented stream
• CPC Class Codes: Y10T 436/144444 Glucose
• CPC Class Codes: Y10T 436/171538 Urea or blood urea nitrogen
• CPC Class Codes: Y10T 436/175383 Ammonia

Claims

17. THE METHOD OF OBTAINING A QUANTATIVE INDICATION OF A CRYSTALLOID SUBSTANCE IN A LIQUID WHICH ALSO CONTAINS A NON-CRYSTALLOID CONSTITUENT, COMPRISING FORMING A STREM CONTAINING SAID LIQUID AND FLOWING SAID STREAM PAST A SEPARATING ZONE, SEPARTING IN SAID ZONE FROM SAID STREAM AND NON-CRYSTALLOID CONSTITUENT THEREOF A PORTION OF THE CRYSTALLOID SUBSTANCE IN PORPORTION TO THE CONCENTRATION THEREOF IN SAID LIQUID,FORMING A SECOND LIQUID INTO A STREAM AND FLOWING IT CONCURRENTLY WITH THE FIRST MENTIONED STREAM IN A PATH TO INTERCEPT AND MIX WITH THE SEPARATED PORTION OF SAID CRYSTALLOID SUBSTANCE SAID SECOND LIQUID COMPRISING A REAGENT CAPABLE OF REACTING WITH SAID CRYSTALLOID SUBSTANCE TO PRODUCE A COLOR CHANGE IN THE LIQUID, FLOWING THE SAID SECOND LIQUID CONTAINING THE CRYSTALLOID SUBSTANCE TO AN ANALYZING ZONE IN THE PATH OF FLOW THEREOF,