Characterization of sludges - Detection and enumeration of Escherichia coli in sludges, soils, soil improvers, growing media and biowastes - Part 3: Macromethod (Most Probable Number) in liquid medium
污泥的表征 - 污泥 土壤 土壤改良剂 生长介质和生物量的大肠杆菌的检测和计数 - 第3部分:液体培养基中的大肠杆菌(最可能数)
This part of the CEN Technical Report specifies a most probable number (MPN) method for the quantitative detection of Escherichia coli in sludges, soils, soil improvers, growing media and biowastes. It allows further differentiation within the test than part 2 of this standard. It is suitable to evaluate the log reduction of E.coli through treatment as well as the quality of the end product.
The method is for material with dry residues of more than 10 %.
For materials with dry residues less than 10 %, the procedure given in CEN/TR 15214-1 should be used.