Key Features
- Dehydrated agar medium
- Designed for antibiotic potency determination
- Suitable for agar diffusion assays
- Referenced to USP standards
- Consistent batch-to-batch performance
- Easy preparation and extended shelf life
Applications
- Microbiological antibiotic potency testing
- Agar diffusion–based bioassays
- Pharmaceutical quality control laboratories
✅ Product Specifications
- Product Name: Antibiotic Medium No. 19
- Form: Dehydrated powder
- Package Size: 250 g / bottle
- Storage Condition: Room temperature
- Shelf Life: 3 years
- Reference Standard: USP
- Final pH (25°C): 5.6 ± 0.1
✅ Composition (per liter)
| Component | Quantity |
|---|---|
| Peptone | 9.4 g |
| Yeast Extract | 4.7 g |
| Beef Extract | 2.4 g |
| Sodium Chloride | 10.0 g |
| Dextrose | 10.0 g |
| Agar | 23.5 g |
All components are fully listed as provided. No functional descriptions added.
✅ Preparation Instructions
- Suspend 60.0 g of the product in 1,000 mL of distilled or deionized water.
- Heat with agitation until completely dissolved.
- Dispense into appropriate containers.
- Sterilize at 115°C for 30 minutes.
- Mix well after sterilization and allow to cool before use.