Used for the preparation of Egg Tellurite Glycine Pyruvate Agar (ETGPA). May also be used for BD Difco™ 2 kg. the identification of staphylococci on the basis of their ability to clear egg yolk. Use with EY Tellurite Enrichment (Cat. Nos. 277910, 212357 and 257201) for the detection and enumeration of coagulase-positive staphylococci from food, skin, soil, air, and other materials.