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Agglomerate

Often in nanotechnology discussions, references to an agglomerate is used interchangeably with references to an aggregate.

“A collection of particles that are held together by both weak and strong forces, including van der Waals and electrostatic forces, and sintered bonds.”1

“In nanotechnology, a group of particles held together by relatively weak forces (e.g., van der Waals or capillary . . ) that may break apart into smaller particles upon processing.2

“Agglomerates of nanoparticles from a few hundred nanometers to a few micrometers in diameter may also be inhaled, ingested or deposited on the skin, and may have the potential to express toxicity associated with their nanostructure.”3

1. G. Oberdörster, A. Maynard, K. Donaldson, et al, “Principles for characterizing the potential human health effects from exposure to nanomaterials: elements of a screening strategy,” Particle and Fibre Toxicology 2005, 2:8, §1.0.

2. ASTM International, “Standard Guide for Handling Unbound Engineered Nanoscale Particles in Occupational Settings,” E 2535-07, § 3.2.2 (October 2007)(emphasis in original).

3. G. Oberdörster, A. Maynard, K. Donaldson, et al, “Principles for characterizing the potential human health effects from exposure to nanomaterials: elements of a screening strategy,” Particle and Fibre Toxicology 2005, 2:8, § 4.0.