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Blown-in Cellulose Insulation Through the Microscope

Blown-in Cellulose Insulation

This cluster of paper fiber and ink is a standard from blown in cellulose insulation. These fibers show staining from red and blue ink intermittently along their length. Black ink is more common.

Transmitted Off Crossed Circular Polarized Light and Reflected Darkfield Illumination

Definition/Function:

Blown-in cellulose insulation is typically shredded newspaper fiber. The fibers are often associated with ink, either in clumps or as stains along the paper fibers.

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