IMPORTANT — The electronic file of this document contains colours which are considered to be useful for the correct understanding of the document. Users should therefore consider printing this document using a colour printer.This document specifies a method for the determination of the characteristic size of the openings of a single layer of a geotextile or geotextile-related product using the wet-sieving principle.Cross References:ISO 10320ISO 9862ISO/IEC Guide 99ISO 2591-1ISO 565All current amendments available at time of purchase are included with the purchase of this document.