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BacterTube™ Tryptic Soy Broth (TSB) 15% Glycerol
- The medium is a liquid medium used in the long-term frozen storage of microorganisms.
- Code: 08052
- Packaging: 50 tubes/ box or as per customer request.
- Storage Conditions: 2–8°C.
- Transportation: Ambient temperature.
- Shelf Life: 12 months from the date of manufacture.
INTENDED USE
- BacterTube™ Tryptic Soy Broth (TSB) 15% Glycerol is a liquid medium used in the long-term frozen storage of microorganisms.
PRINCIPLES
- BacterTube™ Tryptic Soy Broth (TSB) 15% Glycerol is a highly nutritious medium used for cultivation of a wide variety of organisms. The combination of Tryptone and soya peptone makes the medium nutritious by providing nitrogenous, carbonaceous substances, amino acids and long chain peptides for the growth of microorganisms. Dextrose/glucose serve as the carbohydrate source and dibasic potassium phosphate buffer the medium. Sodium chloride maintains the osmotic balance of the medium. Glycerol plays a major role as an antifreezing agent. Hence it is recommended for maintenance of cultures as glycerol serves as an cryopreservant.
- Prepare an overnight culture of the organism to be stored on an appropriate non-selective solid medium.
- Using a sterile swab or inoculating loop, remove fresh growth from the culture medium and suspend the colonies in the tube to achieve the desired concentration of viable cells.
- Shake or vortex well before freezing suspension at −20°C or below.
RESULTS
- Appearance: The medium is homogeneous in color, free from particles.
- Color: Light yellow, clear.
- Sterility: No bacterial growth observed after incubation at 35–37°C for 48–72 hours.
BacterLab ensures the quality of each product batch by testing with ATCC reference strains.
| Reference strains | Incubation conditions | Expected results |
| Pseudomonas aeruginosa ATCC 27823 | 18 – 24 hours, 35 – 37oC | Good Growth |
| Escherichia coli ATCC 25992 | Good Growth | |
| Staphylococcus aureus ATCC 25923 | Good Growth |
For 1 liter of medium
| Enzymatic Digest of Casein | 17,0 g |
| Glucose | 2,5 g |
| Enzymatic Digest of Soybean Meal | 3,0 g |
| Sodium Chloride | 5,0 g |
| Dipotassium Hydrogen Phosphate | 2,5 g |
| Glycerol | 150 mL |
pH of the ready-to-use medium at 25°C: 7,3 ± 0,2
*Note: This ingredient is for reference only our company will formulate the ingredient according to requests or tender specifications.
| Product Name | Code | Packaging |
| BacterTube™ Tryptic Soy Broth (TSB) 15% Glycerol | 08052 | 50 tubes/ box or as per customer request. |
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