This document is not contractually binding under any circumstances - © 2012 HORIBA Instruments, Inc. Introduction A silver colloid is a suspension with a dispersed phase consisting of silver particles between 1 nm – 1 ìm evenly dispersed in a continuous phase. The sample can be considered to be on the nanoparticle scale if the size of the dispersed phase particles is between 1-100 nm. In general, silver colloids are prepared by liquid phase reduction. The reducing agent type and conditions can be varied to obtain a silver colloid of a given particle size range. Silver colloidal particles can be stabilized by coating their surfaces with polymers to form 3D barriers (steric stabilization) or using the reduction potential of silver to impose electric repulsive forces between particles

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