DIN EN ISO 11731-2 E:2007-10 草案 水質 軍團菌檢測與計數(shù) 第2部分:低細菌計數(shù)水的直接膜過濾法 (ISO 11731-2:2004)
Draft Document - Water quality - Detection and enumeration of Legionella - Part 2: Direct membrane filtration method for waters with low bacterial counts (ISO 11731-2:2004); German version prEN ISO 11731-2:2007