| 摘要 |
<p>A composite device suitable for use in detecting or determining the presence of components in liquids, which comprises a first (11) and a second (20) layer of porous material in contact with each other, a sample-receiving site (16), a reaction site (15) in communication with the sample-receiving site via the second layer, and, located in the layers, liquid barrier means (13) defining a liquid flow path, whereby liquid deposited at the sample-receiving site is transferred to the reaction site.</p> |
