How does m-EI medium work?

Document ID

Document ID TE1003

Published Date

Published Date 08/09/2018
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Question
How does m-EI medium work?
Summary
m-EI medium reaction summary
Answer
Enterococci are used as an indicator organism for recreational water quality evaluation. The m-EI Agar specifically detects enterococci in 24 hours after enzymatic cleavage of a substrate (indoxyl-b-Dglucoside) which results in formation of colonies surrounded by a blue halo.

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