prEN 13040-2

This document specifies the general requirements for the preparation of samples and initial suspensions prior to microbiological examinations of soil improvers and growing media. This method is intended especially for sample preparation prior to microbiological examinations of e.g. E. coli, Salmonella spp. and Enterococcaceae.
Because of the large variety of soil improvers and growing media, this method might not be appropriate in every detail for certain materials. This method might not be appropriate in every detail for certain products. In this case, different methods which are specific to these products can be used if necessary, for justified technical reasons.