Dropper Ferric Chloride, Each of 50

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Ferric chloride reagent droppers are intended for use in the differentiation of microorganisms capable of phenylalanine deamination. Ferric chloride reagent droppers are used to determine if a specific microorganism is capable of producing phenylpyruvic acid from phenylalanine deamination. Most members of the genera proteus and providencia are positive whereas most escherichia and citrobacter species are negative.