ISO/TS 6579-2给出了一种沙门氏菌属的计数方法。存在于:用于人类消费和动物喂养的产品；食品生产和食品处理领域的环境样本；动物粪便；以及通过计算最可能数（MPN）来自初级生产阶段的环境样本。 该方法基于稀释、预富集和选择性富集步骤的小型化。选择性富集培养基，改良半固体Rappaport？Vassiliadis（MSRV）用于检测活动性沙门氏菌，不适用于检测非活动性沙门氏菌。 该方法可能不太适合计数沙门氏菌。伤寒和沙门氏菌。副伤寒。 该方法不适用于（非常）低污染样品（<1 cfu/g）中沙门氏菌的计数。

ISO/TS 6579-2 gives a method for the enumeration of Salmonella spp. present in: products intended for human consumption and for the feeding of animals; environmental samples in the area of food production and food handling; animal faeces; and environmental samples from the primary production stage by calculation of the most probable number (MPN). The method is based on miniaturization of the dilution, pre-enrichment and selective enrichment steps. The selective enrichment medium, modified semi-solid Rappaport?Vassiliadis (MSRV), is intended for the detection of motile salmonellae and is not appropriate for the detection of non-motile salmonellae. It is possible that the method is less appropriate to enumerate Salmonella ser. Typhi and Salmonella ser. Paratyphi. The method is not appropriate for the enumeration of Salmonella spp. in (very) low contaminated samples (<1 cfu/g).