solid material, removable in specified conditions and possessing mechanical cohesion

number of particles counted by their size or other characteristics

measurement of the size of a particle carried out according to a specified procedure and measuring method

cumulative or differential number of particles as a function of particle size

size of particle, x, as defined by the particle's longest dimension, X (length, diameter or diagonal)

component which does not set the fluid in motion and is not actuated by the fluid, for example connector, tube, tank, etc.

method of contaminant extraction using an appropriate jet of test liquid under pressure to spray and/or flush the controlled surface