Filter punch and filter collection system
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United States of America Patent
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Sep 15, 1992
Issued Date -
N/A
app pub date -
Jul 17, 1991
filing date -
Mar 17, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A filter punch construction is provided for use in conjunction with a multiwell filtration device wherein each well includes a filtration membrane. The punch has a leading surface to which is secured an elongated piercing member having a sharp point and a periphery comprising holding or cutting edges and a following surface which has a guide member. The piercing member and cutting edges pierce the filtration membrane in each well and push the entire filter and retentate thereon into a receptacle vial.
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