... ceramics are available for filtration and fluidization of various gas and liquid. Characteristic Enduring corrosion,enduring high temperature, ... Indexes.ItemIndexItemIndexBulk Density, g/cm31.4~1.6Water permeability, t/m2.h1.0~2.5Pore size, m10~500Gas ... permeability, m3/m2h.h1.8~2.5Porosity, %30~50Acid resistance ... ×40NCB-6400×400×65NG-120120×80×1000 gas filter material