As we see the scanning electron microscope picture of glass fiber membrane
, its micropores are formed by the accumulation of individual fibers. Not only the surface of the membrane but also a lot of particles can be contained inside it. Relatively speaking, PES membrane filter, MCE membrane filter, PTFE membrane filter, Nylon membrane filter
, PVDF membrane filter, etc. mainly trap particulates on the surface of the membrane, so GF has strong dirt holding capacity, but the absolute retention accuracy is not as high as that of microporous membranes, so it is often used in coarse filtration and pre-filtration.
Filter membrane prioritizes the retention of large particles, while protecting the efficiency of the subsequent membrane, preventing the subsequent membrane from being blocked, and increasing the product use effect! Similarly, polypropylene membrane can also be used as a pre-filter, which has the same effect as glass fiber membrane filter, and is used at the front end of membrane filtration to prevent filter clogging!