Key Features
- Dehydrated culture medium
- Designed for antibiotic potency determination
- Suitable for microbiological assay techniques
- USP-referenced formulation
- Reliable and reproducible performance
- Easy preparation and extended shelf life
Applications
- Microbiological antibiotic potency testing
- Liquid-based antibiotic bioassays
- Pharmaceutical quality control laboratories
✅ Product Specifications
- Product Name: Antibiotic Medium No. 39
- Form: Dehydrated powder
- Package Size: 250 g
- Storage Condition: Room temperature
- Shelf Life: 3 years
- Reference Standard: USP
- Final pH (after sterilization): 7.9 ± 0.1
✅ Composition (per liter)
| Component | Quantity |
|---|---|
| Peptone | 5.0 g |
| Yeast Extract | 1.5 g |
| Beef Extract | 1.5 g |
| Sodium Chloride | 3.5 g |
| Dextrose | 1.0 g |
| Dibasic Potassium Phosphate | 3.68 g |
| Monobasic Potassium Phosphate | 1.32 g |
All components are fully listed exactly as provided. No functional descriptions added.
✅ Preparation Instructions
- Suspend 17.5 g of the product in 1,000 mL of distilled or purified water.
- Heat with agitation until completely dissolved.
- Dispense into suitable containers (e.g., conical flasks).
- Sterilize at 121°C for 15 minutes.
- Allow to cool before use.