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OwnerSusan Alcock, Stephen White +7inventors
InventorsSusan Alcock, Stephen White, Anthony Turner, Steven Setford, Ibtisam Tothill, Jon Dicks, Sarah Stephens, Jennifer Hall, Phillip Warner
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A backing sheet (101) is provided with a pattern of pathways (131,132,133) of (e.g.) silica or cellulose by a printing process (e.g., screen printing). There may be multiple pathways leading from an eluant application region (117) to a detection zone (116) and thence to a waste reservoir (118). Different pathways may have different fluid traversal times because they differ in length and/or material (e.g., nitrocellulose for slow traversal and fibrous cellulose for rapid traversal by an aqueous liquid). Thus analyte and reagents deposited at depots (112,113) on different pathways are sequentially delivered to the detection zone. Reagents may be applied by printing. The detection zone may have an electrode assembly (105), also applied by printing, for detecting the effects of analyte.
A method of manufacturing a fluid transport device, which method comprises providing a backing sheet and printing onto said backing sheet a material comprising silica, cellulose, a silica derivative or a cellulose derivative to provide a pattern having a liquid application zone with at least two fluid guiding pathways extending from the liquid application zone and leading to a merged zone, said material being printed in a manner that provides for liquids or solutes to flow from said liquid application zone to said merged zone at different transit times.
Dependencies are inferred from the claim text.