DIN EN ISO 9308-3-1999 水质.表面水和废水中大肠杆菌和大肠杆菌类的验证和计数.第3部分:采用液体介质中接种的小型化法(最大可能数量)
Water quality - Detection and enumeration of Escherichia coli and coliform bacteria in surface and waste water - Part 3: Miniaturized method (most probable number) by inoculation in liquid medium (ISO 9308-3:1998); German version EN ISO 9308-3:1998