Membrane: hydrophilic nylon66 Color: white Filter surface: plain Thickness, ¦ìm : 90~140 Diameter: ¦µ47, ¦µ60, ¦µ90, ¦µ142, ¦µ150, ¦µ200, ¦µ250, ¦µ293, ¦µ300 Pore size, ¦ìm: 0.1, 0.22, 0.45, 1.0, 3.0, 5.0 Absorption, 0.2 ¦ìm: 100 g/cm2 bsa Maximum operating pressure: forward: 4.2 bar @ 23 ¡æ; 1.5 bar @ 85 ¡æ Ph: 6~13 100pcs/pack.