CEN技术报告的这一部分描述了用于定量检测污泥，土壤，土壤改良剂，生长介质和生物量的大肠杆菌的最可能数量（MPN）的小型化方法。通过处理以及最终产品的质量来评估大肠杆菌的对数减少是合适的。 该方法对于干燥残渣超过10％的材料是方便的。对于干残留少于20％的材料，将使用CEN/TR 15214-1中规定的程序

This part of the CEN Technical Report describes a miniaturized most probable number (MPN) method for the quantitative detection of Escherichia coli in sludges, soils, soil improvers, growing media and biowastes. It is suitable to evaluate the log reduction of E. coli through treatment as well as the quality of the end product. This method is convenient for material with dry residue of more than 10 %. For materials with dry residue less than 20 %, the procedure specified in CEN/TR 15214-1 will be used.