Supplier: SIGMA ALDRICH MICROSCOPY

Used as a kit component in Gram Stain Procedure (Sigma Procedure HT90). Iodine, 0.33%, and potassium iodide, 0.66%.

Supplier: SIGMA ALDRICH MICROSCOPY

Gram’s iodine solution is used as a mordant in the Gram staining process. It is added after the primary staining step with crystal violet; the resultant crystal violet - Iodine complex imparts purple color to the cells.