| 摘要 |
<p>A chemical filter (30) is provided for preventing pollutants in the atmosphere from contaminating sensitive electronic equipment, such as hard disc drives. The chemical filter comprises a layer (42) of charcoal or charcoal- impregnated foam to remove organic contaminants and at least one layer (48,50) of a high surface area metal to remove inorganic pollutants, such as SO2, H2S, NO2 and Cl2' In one embodiment, the chemical filter comprises a layer (42) of charcoal, a layer (48) of a copper foam, a layer (50) of a nickel foam and a layer (46) of a particle filter.</p> |
