Filter punch and filter collection system

Details Filter punch and filter collection system Filter punch and filter collection system

1990-10-15

1991-11-05

Raevis, Robert

Measuring and testing

Sampler, sample handling, etc.

Capture device

G01N 104

Patent

active

050623087

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 flat surface to which is secured an elongated piercing member having a sharp point and a following surface to which is secured a guide member. The piercing member pierces the filtration membrane in each well and the flat leading surface pushes the entire membrane and retentate thereon into a receptacle vial.

REFERENCES:
patent: 2013758 (1935-09-01), Livermore
patent: 2145725 (1939-01-01), Jamieson
patent: 4250899 (1981-02-01), Pagani
patent: 4277249 (1981-07-01), Broughton
patent: 4629236 (1986-12-01), Smith

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