Apparatus and method for drawing off very small quantities...

Details Apparatus and method for drawing off very small quantities... Apparatus and method for drawing off very small quantities...

G - Physics

01

N

73/102, 222/20

G01N 1/04 (2006.01) A61J 3/02 (2006.01) G01F 11/28 (2006.01)

Patent

CA 1150975

Abstract of the Disclosure Very small metered quantities of powder (in the range of about 10 to about 0.5 mg) are drawn off by a tubular member which can be selectively connected to a source of vacuum or compressed air and which carries at one end a metering chamber the walls of which are formed of a porous material. The outer end of the chamber side walls are air-tight. The chamber is filled with the desired material by applying vacuum within the tube, and emptied by apply- ing compressed air. The capacity of the chamber can be adjustable.

363850

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