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Lugol solution

for microscopy (Bact., Bot.)

Iodine/Potassium iodide solution
MDL number:
PubChem Substance ID:


for microscopy (Bact., Bot.)

Quality Level


microbe id | staining: suitable


1.007 g/mL at 20 °C

antibiotic activity spectrum

Gram-negative bacteria
Gram-positive bacteria



SMILES string




InChI key


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General description

Lugol iodine solution is an effective preservative for the marine bacteria.
Lugol solution is a disinfectant, which is used to detect starch in organic compounds. It is used in dental procedures, diagnosis of cervical cell alterations and Schiller´s test. Lugol solution is used in panendoscopic examination of squamous cell carcinoma of the esophagus. It is used as a mordant in Gram staining.


Lugol solution has been used as a staining component to detect starch in plants. It has also been used to saturate thyroid in biodistribution study.

Storage Class Code

12 - Non Combustible Liquids

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

A J Pomroy
Applied and environmental microbiology, 47(5), 1191-1192 (1984-05-01)
Lugol iodine solution was compared with glutaraldehyde as a preservative for marine bacteria. Direct counts with the fluorochrome 4',6-diamidino-2-phenylindole show no significant difference between the preservatives, but the use of Lugol solution has several advantages over glutaraldehyde, especially in the...
Evaluation of the presence of arabinogalactan proteins and pectins during Quercus suber male gametogenesis
Costa M, et al.
Annals of Botany, 115(1), 81-92 (2014)
The Chemical Mechanism of Bacterial Behavior: I. Behavior Toward Dyes-Factors Controlling the Gram Reaction 1
Stearn EW and Stearn AE
Journal of Bacteriology, 9(5), 463-463 (1924)
Cryo-focused ion beam sample preparation for imaging vitreous cells by cryo-electron tomography
Schaffer M, et al.
Bio-protocol, 5.17, e1575-e1575 (2015)
David A Widdick et al.
Proceedings of the National Academy of Sciences of the United States of America, 103(47), 17927-17932 (2006-11-10)
The twin-arginine translocation (Tat) pathway is a protein transport system for the export of folded proteins. Substrate proteins are targeted to the Tat translocase by N-terminal signal peptides harboring a distinctive R-R-x-Phi-Phi "twin-arginine" amino acid motif. Using a combination of...

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