Clinical Microbiology

CHROMagar™ STEC

For detection of

Shiga-Toxin producing E.coli (STEC)

Most common Shiga-Toxin E.coli serotypes → mauve

Other Enterobacteriacae → colourless, blue or inhibited

Gram positive bacteria → inhibited

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CHROMagar™ Y.enterocolitica

For detection and direct differentiation

of pathogenic Yersinia enterocolitica

Pathogenic Y.enterocolitica

→ mauve

Non pathogenic Y.enterocolitica and Background flora (Citrobacter, Enterobacter, Aeromonas etc)

→ Metallic blue, inhibited or limited growth in metallic blue colour

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CHROMagar™ Orientation

For isolation and differentiation
of urinary tract pathogens.

Typical Appearance of microrganisms

E.coli → dark pink to reddish
Enterococcus → turquoise blue
Klebsiella, Enterobacter, Citrobacter → metallic blue
Proteus → brown halo
Pseudomonas → cream, translucent
S.aureus → golden, opaque, small
S.saprophyticus → pink, opaque, small

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CHROMagar™ Acinetobacter

For detection of Acinetobacter and MDR Acinetobacter sp.

Typical Appearance of microrganisms

For detection of Acinetobacter sp.:

Acinetobacter sp. → red

Other gram (-) → mostly inhibited

Gram(+) bacteria and yeasts → inhibited

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CHROMagar™ Candida

For isolation and differentiation
of major clinical-significant Candida species.

Typical Appearance of microrganisms

Candida albicans → green
Candida tropicalis → metallic blue
Candida krusei → pink, fuzzy
Other species → white to mauve

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CHROMagar™ MRSA

Isolation and differentiation of Methicillin Resistant Staphylococcus aureus (MRSA) including low level MRSA.

Typical Appearance of microrganisms

Methicillin Resistant Staphylococcus aureus (MRSA)
→ rose to mauve
Methicillin Susceptible Staphylococcus aureus (MSSA) → inhibited
Other bacteria → blue, colourless or inhibited

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