Medium 11 (Neomycin Assay Agar) 250g for microbiological antibiotic potency testing

Antibiotic Medium No. 11 – Neomycin Assay Agar for Potency Testing

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Product Overview

Antibiotic Medium No. 11, also known as Neomycin Assay Agar, is a dehydrated solid culture medium developed for the microbiological determination of antibiotic potency.
The formulation is suitable for agar diffusion–based assay methods commonly used in antibiotic activity evaluation.

This medium is referenced to USP guidelines and supplied in powder form, offering consistent quality, convenient preparation, and long-term stability for routine microbiology laboratory use.

Key Features

  • Designed for microbiological antibiotic potency testing

  • Suitable for agar diffusion assay methods

  • Referenced to USP guidelines

  • Dehydrated powder format for easy storage and preparation

  • Reliable and reproducible laboratory performance

Applications

  • Neomycin potency determination

  • Microbiological assay of antibiotics

  • Quality control testing

  • Laboratory research and analysis

✅ Product Specifications

  • Product Name: Antibiotic Medium No. 11
  • Alternative Name: Neomycin Assay Agar
  • Form: Dehydrated powder
  • Package Size: 250 g / bottle
  • Storage Condition: Room temperature
  • Shelf Life: 3 years
  • Reference Standard: USP
  • Final pH (25°C): 8.3 ± 0.1

✅ Composition (per liter)

ComponentQuantity
Beef Extract1.5 g
Pancreatic Digest of Casein4.0 g
Peptone6.0 g
Yeast Extract3.0 g
Dextrose1.0 g
Agar15.0 g

✅ Preparation Instructions

  1. Suspend 30.5 g of the product in 1 liter of distilled or deionized water.
  2. Heat to boiling until completely dissolved.
  3. Dispense into suitable containers.
  4. Sterilize at 121°C for 15 minutes or 115°C for 30 minutes.
  5. After sterilization, mix well.
  6. Allow to cool and store for use.

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