Apparatus including a sample petter tube for obtaining reproducible liquid samples of small volume
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United States of America Patent
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-
Jan 28, 1992
Issued Date -
N/A
app pub date -
Jan 26, 1990
filing date -
Sep 20, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The disclosure teaches a pipette or petter tube and a system using the pipette to obtain reproducible liquid samples of known small volume. The pipette has an elongate body with one end adapted to be removably engaged by an aspiration device and the other end which is closed is adapted to contact a surface. The body has a spherical portion proximate the closed end. At least one aperture penetrates the wall of the spherical portion. When the petter tube is used in conjunction with a hollow tube having a known volume and of such size that the closed end of the pipette contacts the bottom of the tube a quantity of liquid can be aspirated from the tube leaving only a small predetermined volume behind.
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