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Photographic gallery.  Thousands of particles under the microscope.

Open Cell Foam

Open cell foam may be from a foam filter, foam padding, or the padded insole of a shoe. Fragments of foam are common in indoor environmental samples.

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Closed Cell Foam

Closed cell foams are used as insolation and as structural materials in shipping containers.

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Floral Foam

Floral foams are designed to retain water. The are typically microporous as well as being an open cell type foam.

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Urea and Melamine-Formaldehyde Foam

This type of foam is used as insolation and as a filler for gaps in structures.

Urea-Formaldehyde Foam Urea-Formaldehyde Foam Urea-Formaldehyde Foam Urea-Formaldehyde Foam Melamine-Formaldehyde Foam