| 摘要 |
<p>A thin layer medium for use in molecular diffusion or affinity separation processes is made by bonding to the surface of a hydrated gel sheet a layer of discrete particles of water-sorptive material. The medium may be maintained wet until used or it may be dried for storage and rehydrated before use. The particles may contain a substance having an affinity for a component of the composition being subjected to the separation process. In another embodiment, the particles are embedded within the backing sheet, which is scored to expose the surfaces of the particles.</p> |
