NF U44-306*NF EN 13040:2007 土壤改良物和生长介质.化学和物理试验用样品的制备、干物质含量、水分含量和实验室压实松散材料密度的测定
Soil improvers and growing media - Sample preparation for chemical and physical tests, determination of dry matter content, moisture content and laboratory compacted bulk density.