DIFF Subgroup
G01N 15/0606 Full Title
Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials > Investigating concentration of particle suspensions (by weighing G01N5/00; investigating sedimentation of particle suspensions G01N15/04; investigating individual particles G01N15/10)
Of 3 combined children, 0 exist in both systems.
3 codes are CPC-only extensions.