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The Working Principle Of EPTFE Film

There are three kinds of filtering principles: sieving, filter cake layer filtering and deep filtering. It is generally believed that the separation mechanism of MF is a screening mechanism, and the physical structure of the membrane plays a decisive role. In addition, the adsorption and electrical properties have an effect on the retention. The effective separation range is 0.1-10 micron m, and the operating static pressure difference is 0.01-0.2MPa.

PTFE membrane can retain 0.1 to 1 microns between the particles, membrane allows macromolecular organic matter and dissolved solid (inorganic salt) through, but can stop the suspended solids, bacteria, viruses and some large scale colloids through the membrane on both sides of the operating pressure (effective driving force) is generally 0.7bar.


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