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Manifold vacuum biochemical test method and device

  • US 4,427,415 A
  • Filed: 01/29/1981
  • Issued: 01/24/1984
  • Est. Priority Date: 01/05/1979
  • Status: Expired due to Fees
First Claim
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1. A laboratory test device for capturing substances suspended in a liquid comprising:

  • a. a plate formed to define a plurality of wells to contain the liquid samples to be tested,b. a drain in each said well consisting of a hole of a diameter such that surface tension of the liquid will maintain the liquid above the hole,c. a filter medium placed within the well to cover the drain hole,d. an enclosed vacuum chamber joined to the bottom of said plate,e. gasket means sealing the joined surfaces of the plate and vacuum chamber to prevent loss of vacuum pressure,f. connecting means from said vacuum chamber to a vacuum source of sufficient size to draw the liquid of the test sample through the filter and drain hole leaving suspended solids of the test sample deposited upon said filter medium.

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