Characterization of sludges - Detection and enumeration of Salmonella spp. in sludges, soils, soil improvers, growing media and biowastes - Part 3: Presence/absence method by liquid enrichment in peptone-novobiocin medium followed by Rapport-Vassiliadis
This part of the CEN Technical Report specifies a presence/absence procedure to detect Salmonella spp using a four-stage presence/absence method in up to 50g (wet weight) sample. The method has a limit of detection of approximately 10 cfu/50 g wet weight sludge.NOTE The objective is to cover untreated and treated sludges, soils, soil improvers, growing media and biowastes.