Supplied as a 100X concentrated sterile-filtered solution. Pencillin/Streptomycin/Amphotericin B contains 10,000 IU/ml of Penicillin potassium (Cat. No. 2504), 10 mg/ml of Streptomycin sulfate (Cat. No. 2501), and 25 μg/ml of Amphotericin B (Cat. No. 2497). Penicllin-Streptomycin-Amphotericin B is used to supplement cell culture media. It is effective against yeast, fungi, gram-positive and gram-negative bacteria. Purity See the individual components