NS-EN ISO 7899-1:1998
水质 地表水和废水中肠球菌的检测和计数 第1部分:液体培养基接种微型法(最可能数)(ISO 7899-1:1998)
Water quality — Detection and enumeration of intestinal enterococci in surface and waste water — Part 1: Miniaturized method (Most Probable Number) by inoculation in liquid medium (ISO 7899-1:1998)