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BM0397
Saline Tryptone Water (pH 7.0)
BM0397 Saline Tryptone Water (pH 7.0) is isotonic saline containing 0.1% tryptone that may be used as a general-purpose diluent in many areas of the laboratory. It is recommended by The British Standards Institute (1) and is tested according to the principles of ISO 11133:2014 (2). The product does not interfere with biochemical reactions used to identify organisms, such as indole production.

References
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.
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BM1331
Sulphuric Acid (0.5N)

This product may be used as an alternative pre-treatment solution to lessen the background flora of samples before the testing for Mycobacteria species. This reagent should only be used for samples that routinely produce contaminated cultures after processing with an alkaline digestant.

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BM1323
Sulphuric Acid (4%)

This product may be used as a pre treatment solution to lessen the background commensal flora of samples before the testing for Mycobacteria species.

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BM1950
Todd-Hewitt Broth

A nutritious broth medium formulated by Todd and Hewitt for the production of antigenic streptococcal haemolysin. The broth is also used to cultivate streptococci prior to serological grouping. Normally the use of fermentable sugars in the broth would inactivate the haemolysin due to acid production. This is prevented by the use of buffers to maintain the pH in this broth.

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BM1430
Tryptone Soya Agar

This is a general-purpose medium supporting a wide range of organisms. It conforms to the requirements of the United States Pharmacopeia for sterility testing of pharmaceutical products as well as being suitable in all areas of bacteriological investigation.

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BM1436
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
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BM1432
Tryptone Soya Agar (USP)

This is a general-purpose complex medium for the cultivation and isolation of aerobic and anaerobic microorganisms. The base medium, Tryptone Soya Agar (Soybean-Casein Digest agar), conforms to the Harmonized United States Pharmacopoeia (USP), European Pharmacopoeia (EP), and Japanese Pharmacopoeia (JP). The medium can be incubated under aerobic or anaerobic conditions after use for sterility testing, air sampling and other areas of bacteriological investigation.

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BM1435
Tryptone Soya Agar with Lecithin (0.7g/L) and Tween 80 (5.0g/L)

This is a general-purpose complex medium for cultivation and isolation of fastidious bacteria, yeasts and moulds. The formulation is based on the United States Pharmacopoeia (USP Medium II) and European Pharmacopoeia (EP Medium B). Lecithin and Polysorbate 80 (Tween 80) are added to inactivate surface disinfectants. The medium can be incubated under aerobic or anaerobic conditions for sterility testing, air sampling and other areas of bacteriological investigation.

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