Description
What is STGG Transport Medium?
The STGG Transport Medium serves as an essential tool in microbiology laboratories worldwide. It plays a critical role in the collection, transportation, and preservation of Streptococcus pneumoniae and Neisseria meningitidis. These pathogens are significant causes of respiratory infections and meningitis, making their accurate handling crucial for public health studies.
Why Choose STGG Transport Medium?
This medium stands out due to its unique formulation. Ingredients like skim milk powder, tryptone, glucose, and glycerol provide nutrients while protecting the bacteria during transit. Additionally, potassium dihydrogen phosphate acts as a buffer, maintaining pH stability. Such features ensure that samples remain viable for extended periods, whether stored at -80°C for long-term preservation or transported at 4°C for up to one week.
Applications in Laboratory Settings
In epidemiological studies, the STGG Transport Medium proves indispensable. Researchers rely on it to maintain the integrity of bacterial samples during fieldwork. When used correctly, it enhances recovery rates of Streptococcus pneumoniae and Neisseria meningitidis, contributing to more accurate diagnostic outcomes. Moreover, laboratories benefit from its ease of use and compatibility with various culture methods.
How to Use the Medium Effectively
To maximize the efficacy of the STGG Transport Medium, follow these steps:
- Aseptically inoculate Streptococcus pneumoniae or Neisseria meningitidis samples into the medium.
- For short-term transport, store the tubes at 4°C. Avoid exceeding one week to prevent sample degradation.
- For long-term storage, freeze the samples at -80°C. This method preserves bacterial viability for over two years.
- During recovery, thaw the frozen bacterial solution using warm water baths or other appropriate techniques. Subsequently, transfer the solution to liquid culture media or spread it on blood agar plates for incubation at 36±1°C for 24-72 hours.
Key Features and Specifications
- Ingredients: Skim milk powder, tryptone, soybean meal digest, sodium chloride, potassium dihydrogen phosphate, glucose, and glycerol.
- Storage Conditions: Ready-to-use, stored at 2-25°C for up to 12 months. Avoid overheating.
- Packaging Options: Available in 1.5mL, 2mL, and 3mL tubes, with box sizes ranging from 20 to 100 pieces per box.
- Appearance: Light yellow turbid liquid.
Limitations and Precautions
While the STGG Transport Medium offers numerous advantages, certain precautions must be observed:
- Always assume specimens contain infectious microorganisms. Handle them accordingly to prevent contamination.
- Do not reuse or repackage the product. Dispose of all biohazard waste according to laboratory regulations.
- Avoid using expired or damaged packaging, as improper storage compromises the medium’s efficacy.
Performance and Reliability
The STGG Transport Medium consistently delivers reliable results when used correctly. Its ability to preserve Streptococcus pneumoniae and Neisseria meningitidis makes it a trusted choice for researchers and healthcare professionals alike.
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