Gram Stain #2 (Gram's Iodine Solution) *

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Iodine, a naturally occurring element found in sea and rocks/sediments, is available in non- radioactive and radioactive forms. It readily dissolves in Chloroform, Carbon Tetrachloride, orCarbon Disulfide to form purple solutions. Gram's Iodine Solution appears as an amber-colored opaque liquid with a characteristic odor at room temperature. Lab Alley’s Gram's Iodine Solution is a combination of Potassium Iodide and Iodine dissolved in purified Water. It contains iodine in the concentration range of 1-2%. Lab Grade is also known as Laboratory Reagent (LR) and Chemically Pure (CP). Lab-grade chemicals possess reasonable purity but do not comply with any official standards for quality or purity. Lab Alley’s Gram's Iodine Solution is ideal for Gram staining applications to differentiate gram-positive and gram- negative organisms. In the United States of America (USA), Lab Alley is selling its high- quality Gram's Iodine Solution online at

Common Uses
  • Reagent
  • Volumetric analysis
  • Gram staining procedures
Safety and Handling

Please contact us to request a Safety Data Sheet (SDS) and Certificate of Analysis (COA) for Gram's Iodine Solution.

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Questions & Answers

  • Is this Iodine 2%

    Yes. It contains 2% Iodine.