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Photographic gallery.  Thousands of particles under the microscope.
Lead Iodide Crystals

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 and Mason.

Significance in the Environment:

Characteristic Features:

Associated Particles:


Chamot, Emile Monnin and Clyde Walter Mason, HANDBOOK OF CHEMICAL MICROSCOPY, Volume II, pp. 203-4, 1940.