Immunoassay filter and test device containing same, with...

Details Immunoassay filter and test device containing same, with... Immunoassay filter and test device containing same, with...

G - Physics

01

N

182/120, 167/44

G01N 33/53 (2006.01) B01D 61/18 (2006.01) B01D 67/00 (2006.01) B01D 69/12 (2006.01) G01N 33/543 (2006.01)

Patent

CA 1321554

-0- IMMUNOASSAY FILTER AND TEST DEVICE CONTAINING SAME. WITH FLOW-DELAYING POLYMER ABSTRACT There is disclosed a filter and a device positioning the filter between an upper and a lower chamber, particularly useful in an immunoassay. The filter and device are improved in that the membrane comprising the filter is overcoated with at least one water-soluble polymer of a type, a molecular weight, and at a dry-solids coverage effective to create for that membrane an induction time at room temperature of at least about 30 seconds and no greater than about 300 seconds, for a liquid head of pressure of about 6 mm of water.

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