Lead Iodide Crystals
Transmitted Brightfield Illumination
Lead in solution can be detected by adding a small crystal of potassium iodide. The result is a bright flash of yellow and
the growth of these distinctive hexagonal plates. The test is described in the HANDBOOK OF CHEMICAL MICROSCOPY by Chamot
Significance in the Environment:
Chamot, Emile Monnin and Clyde Walter Mason, HANDBOOK OF CHEMICAL MICROSCOPY, Volume II, pp. 203-4, 1940.