Antibiotic Assay Medium No. 36 (Tryptone Soya Agar) – 500g

Antibiotic Assay Medium No. 36, also known as Tryptone Soya Agar or Soybean Casein Digest Agar, is a general-purpose medium recommended for the microbiological assay of antibiotics using the cup-plate or cylinder plate method.

It supports the growth of fastidious microorganisms and is used in pharmaceutical quality control to determine the potency and activity of antibiotics. The medium is suitable for assays performed with or without blood supplementation and conforms to the specifications laid out by the United States Pharmacopeia (USP).

Prepared from high-quality ingredients, it ensures consistent performance, high clarity, and reliable zone measurements in antibiotic susceptibility testing.

Key Features

• Formulated according to USP standards

• Promotes the growth of fastidious organisms

• Suitable for antibiotic potency testing

• High transparency for clear zone reading

• Can be supplemented with blood or other agents

• Manufactured under ISO 9001, ISO 11133, ISO 13485 certified conditions

Specifications

• Composition: Casein enzymic hydrolysate, papaic digest of soybean meal, sodium chloride, agar

• Form: Dehydrated powder

• Net Weight: 500 grams

• Media Yield: Approx. 12–15 liters of agar

• pH: 7.3 ± 0.2 at 25°C

• Storage: Store in a cool, dry place at 10–30°C

• Shelf Life: 24 months from manufacturing

• Sterilization: Autoclave at 121°C for 15 minutes

Applications

• Microbiological assay of antibiotics

• Zone of inhibition studies

• Cultivation of fastidious bacteria

• Pharmaceutical QC testing