| 摘要 |
Filtration apparatus that is very versatile is disclosed. The apparatus includes a porous filter disc that can be readily interchanged with other filter discs having the same or different porosity. In addition, a membrane filter can be used in conjunction with the porous filter disc. The porous filter disc serves as a support for the membrane filter. The porous filter disc and membrane when provided are designed to interfit with the balance of the filtration apparatus in such a manner that the filtration unit is simple in construction and highly versatile in use.
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