Agglomerate

The term matters only because it feeds into the nanomaterial definition, which in turn can raise a device's class under EU MDR Annex VIII. Particles that are loosely clumped can still count toward the nanomaterial thresholds.

‘agglomerate’, for the purposes of the definition of nanomaterial in point (18), means a collection of weakly bound particles or aggregates where the resulting external surface area is similar to the sum of the surface areas of the individual components;

EU MDR, Article 2(20)