Multiple choice

How many components are there in Gram’s staining process?

  1. 2

  2. 3

  3. 4

  4. 5

  5. 6

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Gram's staining consists of four components:

1- Primary stain (Crystal violet, methyl violet or Gentian violet)

2- Mordant (Gram's iodine)

3 - Decolouriser (Ethyl alcohol, acetone or 1 : 1 ethanol-acetone mixture)

4 - Counterstain (Dilute carbol fuchsin, safranin or neutral red)

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