Assay devices

Details Assay devices Assay devices

G - Physics

01

N

G01N 33/558 (2006.01) B01L 3/00 (2006.01) B65D 81/26 (2006.01) G01N 33/543 (2006.01)

Patent

CA 2215198

Storage stability of an assay device, comprising an assay strip and sensitive reagents such as antibodies within a plastics casing, is maintained by moulding some or all of the casing from desiccant-containing plastics material, especially a blend of about 60-65 % polystyrene and about 30 % silica dust. Ideally the desiccant-containing plastics material is used in the moulding of a removable cap for the device. The cap can be made by sandwich injection moulding, using the desiccant-containing polystyrene as a core, surrounded by conventional polystyrene.

La stabilité d'emmagasinage d'un appareil d'analyse, comportant une languette réactive et des réactants tels que des anticorps à l'intérieur d'un boîtier en plastique, est maintenue en moulant tout ou partie du boîtier dans un matériau plastique contenant un deshydrant, particulièrement un mélange d'environ 60 à 65 % de polystyrène et environ 30 % de poudre de silice. L'idéal est d'utiliser le plastique contenant le déshydrant dans le moulage d'un couvercle démontable pour l'appareil. Le couvercle peut être fabriqué par moulage par injection bimatière en utilisant le polystyrène contenant le déshydrant comme noyau, entouré de polystyrène courant.

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