Full Description ADOPTED_FROM:EN 933-2:2020 This document specifies the nominal size of apertures for test sieves used for determination of particle size of aggregates. It applies to: a) test sieves of perforated metal plate having square holes of size from 4 mm and up to 125 mm; b) test sieves of metal wire cloth having aperture sizes below 4 mm down to 0,063 mm.