Black Particles Not From Combustion Under the Microscope

Black Particles Not from Combustion

Rubber Wear Particles

Paint Sphere Under the Microscope

Pencil Lead Dust Under the Microscope

Magnetite Sphere

Hematite

Wear Metal

Iron Mill Scale Under the Microscope

Nigrospora Spore

Insect Hair

Toner and Paper

Black Particles, Office Supply Air

Though some of these particles are from combustion (cenospheres), they are not from an uncontrolled fire.

Black Particle in an Office

Black Particle in an Office