This medium is recommended for microbiological assay of antibiotics. pH above 8. (Erythromycin, Chlortetracycline, Dihydrostreptomycin sulphate, Erythromycin estolate, Framycetin, Gentamicin, Gentamicin sulphate, Kanamycin sulphate, Kanamycin monosulphate, Kanamycin acid sulphate, Netilmicin sulphate, Netilmicin, Neomycin, Paromomycin, Sisomycin, Spiramycin, Streptomycin sulphate)