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Hydrogen peroxide 3%, (H2O2)

Hydrogen peroxide 3%, (H2O2), catalase positive organisms (such as Staphylococcus will evolve gas bubbles in the presence of (H2O2)

 

Useful in the presumptive identification and differentiation of many bacteria. Beta-hemolytic organisms, such as Streptococcus species (catalase-negative), Staphylococcus species (catalase-positive), and Listeria species (catalase-positive) can be differentiated by their catalase reaction.

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