Scotchlite Glass bubble

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Description

[3M, St Paul, MN] A brand name for microscopic hollow glass spheres generally used as a lightweight filler. Glass bubbles are made from a soda-lime borosilicate glass that softens above 715C. The tiny, transparent bubbles, also called microballoons, visually appear as a free flowing white powder. Glass bubbles are made in diameters of 149 and 177 micrometers and are available in a range of densities from 0.12 to 0.41 grams per milliliter. See also Microballoon.

Synonyms and Related Terms

microsphere; microballoon; glass sphere; microesferas de vidro (Port.)

Other Properties

size: 149-177 microns

Sources Checked for Data in Record

  • Pam Hatchfield, Pollutants in the Museum Environment, Archetype Press, London, 2002

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