The method describes the qualitative determination of faecal streptococci in mineral, spring and table water using Slanetz-Bartley agar (in accordance with Annex 2, point 2b of Section 4 (3) of the German Mineral and Table Water Ordinance of 1 August 1984, as amended on 5 July 2017).
Mineral, spring and table waters as well as drinking waters that are to be marketed.
Membrane filtration (MF) and placement of the filter on tetrazolium sodium azide agar (Slanetz-Bartley agar) (corresponds to method Annex 2, point 2b of §4 para. 3 of the German Mineral and Table Water Ordinance) [1].