Vogel Johnson Agar is used for the isolation of staphylococci in a laboratory setting. Vogel Johnson Agar is not intended for use in the diagnosis of disease or other conditions in humans. Coagulase-positive staphylococci, primarily Staphylococcus aureus, are among the microorganisms that cause spoilage or chemical changes in cosmetic products. To isolate coagulase-positive, mannitol fermenting staphylococci, Vogel and Johnson modified Tellurite-Glycine Agar by Zebovitz, Evans, and Niven. The modification included increasing mannitol and adding a pH indicator. Vogel Johnson Agar selects and differentiates coagulase-positive staphylococci that ferment mannitol and reduce tellurite. Vogel Johnson (VJ) Agar is specified in standard methods testing for cosmetics and nutritional supplements.

• Analyte: Staphylococcus
• Platform: dehydrated culture media
• Formula: enzymatic digest of casein 10.0g/L, yeast extract 5.0g/L, mannitol 10.0g/L, dipotassium phosphate 5.0g/L, lithium chloride 5.0g/L, glycine 10.0g/L, phenol red 0.025g/L, agar 15.0g/L
• Grams per litre: 60.00
• Litres per 500g: 8.00
• Plates per 500g: 458.00