
THB Medium Base – Enrichment Medium for Streptococcus, 250g
THB Medium Base is a nutrient-rich culture medium specially formulated for the enrichment and growth of Streptococcus species. Supplied in 250g bottles, it is stable at room temperature and has a shelf life of 3 years, making it convenient for routine laboratory use.
This medium contains key ingredients to support bacterial growth:
Beef Extract (10.0g/L): Provides essential nutrients and growth factors.
Tryptone (20.0g/L): Supplies peptides and amino acids necessary for Streptococcus proliferation.
Dextrose (2.0g/L): Serves as a carbon source to support bacterial metabolism.
Sodium Bicarbonate (2.0g/L): Maintains optimal buffering capacity and pH stability.
Sodium Chloride (2.0g/L): Ensures proper osmotic balance in the medium.
Disodium Hydrogen Phosphate (0.4g/L): Provides additional buffering support.
pH: 7.2 ± 0.2 at 25°C
Usage Instructions:
Dissolve 36.4g of THB Medium Base in 1L of distilled or deionized water. Sterilize at 121°C for 15 minutes. After cooling to 47–50°C under sterile conditions, supplement with Polymyxin E solution (1 vial per 200ml) and Napthyridine solution (2 vials per 200ml) for optimal Streptococcus enrichment. Mix well and aliquot for use.
This medium is ideal for microbiology laboratories conducting research, diagnostics, or bacterial enrichment, providing consistent and reliable growth results.