1.1 These test methods cover the measurements of saturated hydraulic conductivity, water retention, porosity (including distribution of capillary and air-filled porosity at a known soil suction), and bulk density on sand-based root zone mix These test methods cover the standard procedures and related calculations for determining the saturated hydraulic conductivity, water retention, porosity, and bulk density of sand-based root zone mixtures used in the construction and topdressing of gol