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  • 28-03-2017
  • Biology
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What does the appearance of a blue or pink color in a thioglycollate tube mean?

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AlishaWolf
AlishaWolf AlishaWolf
  • 07-04-2017
The appearance of a pink or blue color in a thioglycolate tube means that oxygen is present in that part of the tube. The different colors depend on which dye has been added. Pink color comes from resazurine, and blue is from methylene blue.
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