CAMPYLOBACTER CSM AGAR

Technical Data #1108a / 2013.04.22

The Campylobacter CSM Agar is a selective solid medium used for the cultivation and isolation of Campylobacter jejuni from fecal specimens. The selective agents inhibit normal flora growth and enhance C. jejuni colonies. Charcoal replace blood addition.

 


 

FORMULA
in grams per liter purified filtered water

Mixed Peptones

23,0

Starch

1,0

Sodium Chloride

5,0

Activated Charcoal

4,0

Sodium Pyruvate

0,1

Agar

15,0

Supplement

 

Hematin

0,032

Antibiotics

 

Cefoperazone

0,032

Vancomycin

0,02

Cycloheximide

0,100

pH 7,4 +/- 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 and dehydrated powder, in a dry place, in tightly-sealed containers at 2-25 C.


SIGN OF DETERIORATION
Media should not be used if the expiry date has passed. Prepared media should not be used if there are signs of contamination or deterioration (shrinking, cracking, evaporation or discoloration). Do not use dehydrated media if it is caked.


DIRECTIONS
Suspend 48,1 g in 1000 ml of purified water. Heat with frequent agitation and boil for one minute. Sterilize at 121 C for 15 minutes. Cool to 45-50 C and aseptically add 10 ml of Hematin (8734) and 10 ml of antibiotics (8733). Dispense into sterile Petri dishes.


PROCEDURE
Prior to inoculate, the prepared media should be brought to room temperature.

  1. Directly, inoculate plate as soon as possible with specimen and streak for isolation. If inoculation will be delayed, an Enteric Pathogen Transport Medium as EPT-100 should be used.
  2. Incubate at 42 C under a reduced O2 atmosphere for 48 hours.


QUALITY CONTROL

Results after 48 hrs at 42C

Organisms

ATCC

Growth

Campylobacter jejuni

33291

+

Escherichia coli

25922

- or partial

Proteus mirabilis

12453

- or partial

Streptococcus faecalis

29212

- or partial

Candida albicans

10231

- or partial

Colonies of C. jejuni will appear on Campylobacter CSM, small, mucoids, flat, irregular and greyish.


LIMITATIONS OF METHOD

Since C. jejuni is thermophilic, plates should be incubated at least 42 C. This medium is only a part of the identification. Other tests may be required.


REFERENCES

  1. Blaser, M.J., I.V. Berkowitz, FM. LaForce, J. Cravens, L.B. Reller, and W-L. L. Wang. 1979 Campylobacter enteritis: clinical and epidimiologic features. Ann. Intern. Med. 91: 179-185.
  2. Karmali, M.A., P.C. Fleming. 1979 Campylobacter enteritidis CMA Journal. 120:1525-1532.
  3. 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.
  4. Mac Faddin, Jean F., Media for Isolation-Cultivation-Identification-Maintenance of Medical Bacteria Vol.1 1985 Baltimore, MD. Williams & Wilkins.
  5. N.C.C.L.S. Quality Assurance for Commercially prepared Microbiological Culture Media N.C.C.L.S. Publication M22-A Approved Standard 1990 Vol.10 No.14.


CATALOGUE NUMBERS

Dehydrated media    
Karmali Agar 500g QB-39-0909
     
Hematin supplement 10x5 ml 8734
CSM Antibiotics 10x5 ml 8733
     
Prepared media    
Plates, 100x15 mm 10/pkg 1108
Mono-Plates, 100x15 mm 10/pkg 1108M
     
Enteric Pathogen Transport, Vial 100/cs EPT-100

 


 

 

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