Detection of Salmonella spp. Presence/Absence ISO 6579-1:2017/Adm.1:202(E) Horizontal method for detecting Salmonella spp. Determination of Staphylococcus aureus UFC/g Ch2671:2002 Coagulase-positive Staphylococcus aureus count – Baird-Parker agar plate count technique. Determination of total coliforms: NMP/g Nch 2635/1:2001 Determination of coliforms and fecal coliforms – Most probable number technique (MPN) Determination of fecal coliforms: NMP/g Nch 2635/1:2001 Determination of coliforms and fecal coliforms – Most probable number technique (MPN)