The main filter way includes cotton cake filter, kieselguhr filter (or diatomaceous earth filter,DE filter), Cardboard filter, twin flow system(TFS), Cross-flow microfiltration(CMF), Sterile membrane filtration.
Cotton cake filter are already out of use recently as it container rock wood, which is harm to body.
Kieselguhr filter, Cardboard filter, Sterile membrane filtration are common filter nowdays.
Kieselguhr filter is for rough filtration, Cardboard filter is for fine filtration, Sterile membrane filtration is used for draft beer. Sometimes those three filtration will combine together to achieve certain effect.
As Kieselguhr filter is most popular among brewers, so here we would like to specify Kieselguhr filter.
Kieselguhr filter includes Plate frame DE filter, Candle DE filter, disc DE filter.
Twin flow system and Cross-flow microfiltration are the upgrade production of kieselguhr filter.
Twin flow system can accurately control the beer back flow to avoid forming foreshot.
Cross-flow microfiltration use membrane and china material to replace kieselguhr, CMF have a lower beer loss and is good for bee quality
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