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DEVICES FOR THE TRANSFER OF SAMPLE LIQUID

  • US 3,681,995 A
  • Filed: 06/08/1970
  • Issued: 08/08/1972
  • Est. Priority Date: 06/09/1969
  • Status: Expired due to Term
First Claim
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1. In an apparatus for transferring sample liquid from an original sample vessel into a sample cell and for subsequently sucking the sample liquid from said cell by means of a relatively large vacuum source of the type in which a first connecting hose from said sample vessel terminates as a first inlet connection in said sample cell, a second outlet connection from the bottom of said sample cell is connected by a second connecting hose to said vacuum source for ultimately emplying said cell, and a shut-off means is provided in said second outlet connecting hose, the improvement comprising:

  • a positive displacement pump means is connected to said cell which cell is generally closed, so as to cause a controlled transfer by suction of sample liquid from said original sample vessel to said sample cell, to thereby ensure relatively slow, bubble-free transfer of said sample liquid with said cell.

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