U.S. Food & Drug Administration
Center for Food Safety & Applied Nutrition

Bacteriological Analytical Manual Online
January 2001

R40
Lugol's Iodine Solution

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Potassium iodide (KI) 10 g
Iodine 5 g
Distilled water 100 ml

Dissolve KI in about 20-30 ml of distilled water. Add iodine and heat gently with constant mixing until iodine is dissolved. Dilute to 100 ml with distilled water. Store in amber glass-stoppered bottle in the dark.



Hypertext Source: Bacteriological Analytical Manual, 8th Edition, Revision A, 1998.

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