BHIA 6,5% SODIUM CHLORIDE AGAR

Technical Data #1584a / 2013.05.21

BHIA 6,5% Sodium Chloride Agar is a selective culture medium used for the differentiation of group D streptococci from other streptococci. Sodium chloride inhibit other streptococci. Dextrose and bromcresol purple indicator give an acid reaction and turn yellow with streptococci group D growth.

 


 

FORMULA
in grams per liter purified filtered water

Brain Heart Infusion

10,0

Casein/Meat Peptone

17,5

Yeast Extract

2,0

Disodium Phosphate

2,5

Dextrose

5,0

Sodium Chloride

65,0

Bromcresol Purple

0,016

Agar

18,0

pH 7,3 +/- 0,2 25 C

This approximate formula may be adjusted and/or enriched to obtain best results.


PRECAUTIONS
This medium is for IN VITRO diagnostic use only.


STORAGE
Store prepared media at 2-8 C protected from direct light. Medium must not be used if there are signs of contamination or dehydration or if the expiry date has passed.


PROCEDURE
Bring prepared medium at room temperature before inoculation.

  1. Inoculate with 2-3 colonies.
  2. Incubate at 35 C for 24 heures.


QUALITY CONTROL

Expected results after 24 hrs at 35C

Organisms

ATCC

Growth

Streptococcus faecalis

29212

+ yellow

Streptococcus pyogenes

19615

-

Streptococcus bovis

9809

-


LIMITATIONS OF METHOD
This is only a part of the identification. Others tests may be required.


REFERENCES

  1. Lennette, E.H., Ballows, A., Hausler, W.J.Jr., and Shadomy, H.J. Manual of Clinical Microbiology. 4th ed. 1985 Washington D.C. American society for Microbiology.
  2. Mac Faddin, Jean F. 1985 Media for Isolation-Cultivation-Identification-Maintenance of Medical Bacteria. Vol. I, Baltimore, MD.: Williams & Wilkins.
  3. Quadri S.M., C.W. Nichols, Quadri S.G.M. 1978 Rapid Sodium Tolerance Test for Presumptive Identification of Enterococci J. Clin. Microbiol., 7:238.


CATALOGUE NUMBERS

Prepared media    
Plates, 100x15 mm 10/pkg 1584
Mono-Plates, 100x15 mm 10/pkg 1584M

 


 

 

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