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HOME > Protocols > Media and Reagents > Ehrlich's Solution Recipe

Ehrlich's Solution Recipe

Ehrlich's solution is used in an indol test.

  1. Dissolve 1g of Para-dimethylamino benzaldehyde in 95ml of 95% ethanol
  2. Add 20 ml of concentrated HCl to the solution from step 1
  3. Mix well

Caution: Always add concentrated acid into the solution and not the solution into concentrated acid!

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