Antibiotic Assay Medium No. 4 (Yeast MB Agar) is supplied by the company, HIMEDIA.

This is an Antibiotic Assay Medium No. 4ideally used for detection of Penicillin-G in milk samples using Bacillus stearothermophilus. Antibiotic Assay Medium No. 4is the name given to Yeast MB Agar.

Product specifications:

• Catalog number:M140-500G
• Brand: HIMEDIA
• Quantity/unit: Pack of 500g

Product composition:gm/L

• Peptone: 6.000
• HM peptone B #: 1.500
• Yeast extract: 3.000
• Dextrose (Glucose): 1.000
• Agar :15.000
• Final pH ( at 25C) :6.60.2

Product features:

• Appearance: Cream to yellow coloured homogeneous free flowing powder
• Gelling: Firm,comparable with 1.5% Agar gel
• Colour and Clarity of prepared medium:Yellow coloured clear to slightly opalescent gel forms in Petri plates
• Reaction:Reaction of 2.65% w/v aqueous solution at 25C. pH : 6.60.2
• pH:6.40-6.80
• Cultural Response: Cultural characteristics observed after an incubation at 55C for 18-24 hours