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Photographic gallery.  Thousands of particles under the microscope.
Diatomaceous Earth Under the Microscope

Celite 535, Batch ?

This is diatomaceous earth sold as a filter agent by Sigma-Aldrich. This population of diatoms is from a marine water source.

Transmitted Phase Contrast Illumination


Diatomaceous Earth, CAS 68855-54-9, is used as a mineral filler in many products, as a mild abrasive in cleaners, as a filter agent to remove particles and polar organic compound, and as an organic insecticide.

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Prescott, G. W., HOW TO KNOW THE FRESHWATER ALGAE, Wm. C. Brown Company, 1970

Vinyard, William C., DIATOMS OF NORTH AMERICA, Mad River Press, Inc., 1979, (ISBN 0-916-422-15-1)

Round, F.E., R. M. Crawford, D.G. Mann, THE DIATOMS:BIOLOGY & MORPHOLOGY OF THE GENERA, Cambridge University Press, pp. 148-9, 1990. (ISBN 978-0-521-71469-3)

Stoermer, Eugene F. and John P. Smol (eds), THE DIATOMS:APPLICATIONS FOR THE ENVIRONMENTAL AND EARTH SCIENCES, Cambridge University Press, 2001 (ISBN 0521004128)