| 摘要 |
<p>The present invention provides a filter apparatus for use in removing impurities and acids contained in a fluid that includes a particulate filter (10) and an acid-neutralizing filter (20). The particulate filter (10) and the acid-neutralizing filter (20) may be positioned within separate housings or they may be positioned within a common housing. The acid-neutralizing filter (20) contains an acid-neutralizing compound such as crushed limestone, calcium carbonate or magnesium carbonate.</p> |
