Appeal 2007-2807
Reexamination 90/006,511
Patent 5,156,811
of pores of said hydrophobic material containing
separate particles of hydrophilic material for
absorbing any liquid contacting said plug member;
and
suction means secured to the first end of said
hollow [tube] for drawing a predetermined volume
of liquid less than the predetermined volume of
said liquid sample chamber into said liquid sample
chamber to leave an air gap of predetermined
volume between a drawn liquid sample and the
plug member.
7. Independent claim 10 reads as follows:
10. A method of transferring a predetermined volume
of liquid from one location to another for analysis, comprising
the steps of:
attaching a suction device to a first end of an open ended
tube having a plug of porous, hydrophobic material positioned
at a predetermined height in the tube to define a liquid sample
chamber of predetermined volume between the plug and the
opposite, second end of the tube, at least a majority of pores of
the plug containing separate hydrophilic particles of smaller
dimensions than the pores;
placing the opposite end of the tube into a supply of
liquid to be sampled;
applying suction to the first end of the tube via the
suction device to draw a predetermined volume of liquid into
the tube until the surface of the drawn liquid lies a
predetermined distance below the plug to form an air gap
between the drawn liquid and plug;
4
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