Figure 2From: A protocol for enumeration of aquatic viruses by epifluorescence microscopy using Anodisc™ 13 membranesPore size distribution of untreated Nuclepore™ filters determined by SEM analysis. (A) SEM image of Nuclepore™ 30 membrane. Scale bar is 200 nm. (B) Pore size range of Nuclepore 30 membrane. (C) Pore size range of Nuclepore 15 membrane.Back to article page