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2. Lugol's iodine - Wikipedia

   en.wikipedia.org/wiki/Lugol's_iodine

   Lugol's iodine is a liquid made up of two parts potassium iodide for every one part elemental iodine in water. [8] Lugol's iodine was first made in 1829 by the French physician Jean Lugol. [7] [8] It is on the World Health Organization's List of Essential Medicines. [9] [10] Lugol's iodine is available as a generic medication and over the ...

3. Amyloid (mycology) - Wikipedia

   en.wikipedia.org/wiki/Amyloid_(mycology)

   In mycology a tissue or feature is said to be amyloid if it has a positive amyloid reaction when subjected to a crude chemical test using iodine as an ingredient of either Melzer's reagent or Lugol's solution, producing a blue to blue-black staining. The term "amyloid" is derived from the Latin amyloideus ("starch-like"). [1]

4. Iodine–starch test - Wikipedia

   en.wikipedia.org/wiki/Iodine–starch_test

   The cut surface of an apple stained with iodine, indicating a starch level of 4–5. The iodine–starch test is a chemical reaction that is used to test for the presence of starch or for iodine. The combination of starch and iodine is intensely blue-black. [1] [2] The interaction between starch and the triiodide anion (I − 3) is the basis ...

5. Tincture of iodine - Wikipedia

   en.wikipedia.org/wiki/Tincture_of_iodine

   USP Tincture of Iodine is defined in the U.S. National Formulary (NF) as containing in each 100 mL, 1.8 to 2.2 grams of elemental iodine, and 2.1 to 2.6 grams of sodium iodide. Alcohol is 50 mL, and the balance is purified water. This "2% free iodine" solution has 0.08 mol/L of I 2, which provides about 1 mg of free iodine per 0.05 mL drop. The ...

6. Staining - Wikipedia

   en.wikipedia.org/wiki/Staining

   Used as a mordant in Gram's staining, iodine enhances the entrance of the dye through the pores present in the cell wall/membrane. Lugol's solution or Lugol's iodine (IKI) is a brown solution that turns black in the presence of starches and can be used as a cell stain, making the cell nuclei more visible. Used with common vinegar (acetic acid ...

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