... , 60mm,90mm,120mm,293mm ... About hydrophilic lab membrane filter discs:Specification:Material:Removal Rating :0.20µm, 0.45µm,1 ... Φ142 Φ150 Φ200 Φ250 Φ293 Φ300 Roll Membrane: 270mm, 300mm Typical Data MaterialN66,PES,CN-CAThickness110±10µmFilter SurfacePlainWettabilityHydrophobicAbsorption0.2µm ...