Tryptone Soya Agar (pH 7.2)

Tryptone Soya Agar (pH 7.2)

BM1436 Tryptone Soya Agar (pH 7.2) is used for a wide range of applications, including culture storage, enumeration of cells, isolation of pure cultures, or general culture. It has been found to be useful in cosmetic testing, water, and wastewater applications. This medium meets the requirements of The British Standards Institution (1) and is tested according to the principles of ISO 11133:2014 (2). and is based on the original formulation described by Leavitt et al. in 1955 (3). In environmental monitoring applications, it is common for plates to be incubated at 30-35°C for bacterial colonies and 20-25°C for mould and fungi (4).

 

  1. The British Standards Institution (2015) BS EN 16615:2015 Chemical disinfectants and antiseptics. Quantitative test method for the evaluation of bactericidal and yeasticidal activity on non-porous surfaces with mechanical action employing wipes in the medical area (4- field test). Test method and requirements (phase 2, step 2). Published by BSI Standards Limited.
  2. International Organization for Standardization (2014) 11133:2014 Microbiology of food, animal feed and water – Preparation, production, storage and performance testing of culture media. Geneva, ISO.
  3. Leavitt, J., Naidorf, I. and Shugaevsky, P. (1955) Aerobes and anaerobes in endodontics. Part I. The undetected anaerobes in endodontics. Part II. Sensitive culture medium for the detection of both aerobes and anaerobes. NYSDJ, 25, pp.377-382.

4. Anon. (1987) Testing methods for use in quality assurance of culture media. Int. J. Food Microbiol., 5, pp.291-296

Additional Information

Container

Pack Size

Volume

Shelf Life (days)

Storage Temp (°C)

Appearance

Firm Gel

Colour

Straw

Recommended Incubation

30-35°C for bacterial colonies and 20-25°C for mould and fungi

pH

Light sensitive

No

Product Description

Organisms Ref. No Result
Enterococcus hirae
ATCC 10541 Growth: Cream colonies
Pseudomonas aeruginosa
NCTC 15442 Growth: White colonies
Staphylococcus aureus
NCTC 6538 Growth: White/yellow colonies

Recommended incubation: 30-35°C for bacterial colonies and 20-25°C for mould and fungi.

Formula*

g/L
Tryptone (casein digest USP)
15.0
Soy peptone
5.0
Sodium chloride
5.0
Agar 15.0
Total 40.0

 

*Adjusted/supplemented as required to meet performance requirements