Home > Catalogo generale > Culture media and ISO confirmation tests > Peptone Water (Indole free) – broth for the identification of tryptophanase positive bacteria using indole test

Peptone Water (Indole free) – broth for the identification of tryptophanase positive bacteria using indole test

  • Brand: Bio-Rad
  • Format: 500 g
  • Code: BR3564334
  • Technology: Culture media and ISO confirmation tests
  • Application: Food/Water microbiology
  • Tag/Filter: Escherichia coli and coliforms

This liquid medium permits the growth of non-fastidious bacteria, particularly for the detection of indole production during the IMVIC test following detection of suspected fecal coliforms and Escherichia coli in food. The principle of the medium relies on the ability of bacteria to produce indole, detected by means of Kovacs reagent (red coloration). This test is suggested in many microbiological methods in food (ISO11866, ISO7251, ISO16654) and water analysis (ISO9308). The medium is available in ready-to-use tubes or as dehydrated powder.


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Peptone Water (Indole free) – broth for the identification of tryptophanase positive bacteria using indole test
  • Brand: Bio-Rad
  • Format: 500 g
  • Code: BR3564334
  • Technology: Culture media and ISO confirmation tests
  • Application: Food/Water microbiology
  • Tag/Filter: Escherichia coli and coliforms


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