Selective and differential medium for isolation of Salmonella and some shigella strains from clinical and food materials.

Salmonella Shigella Agar is a selective differential agar medium used for isolation of pathogenic Enterobacteriaceae, specifically Salmonella sp. and Shigella sp. from foods, other sanitary materials and clinical specimens. Early studies, indicated that SS Agar was superior to other media in the isolation of Salmonella and Shigella from specimens. Later investigators, determined that SS Agar was inferior to Hektoen Enteric Agar and XLD Agar in the recovery of Shigella. Inhibitory action on coliforms and Gram-positive bacteria is obtained by the bile salts mixture and brilliant green in the medium. Sodium citrate inhibits Gram-positive bacteria. Neutral red is a pH indicator and those bacteria which ferment lactose produce pink colonies. Some Salmonella and Proteus sp. produce black-centered (precipitated ferrous sulfate) colonies as a result

Small volumes of Salmonella-Shigella Agar culture media vial(s) may occasionally become entrapped in the seal of the product vial during shipment and storage. If necessary, briefly centrifuge the vial on a tabletop centrifuge to dislodge any liquid in the container`s cap. Certain products may require to ship with dry ice and additional dry ice fee may apply.

MBS653436 is a culture media targeting Salmonella-Shigella Agar. Also known as Salmonella-Shigella Agar (Powder).