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CPC - G01N - 15.04.2013 - page 8G01N 27/56B ;- by measuring absorption of sonic or ultrasonicvibrations: G01N 29/00 , e.g. G01N 29/02G01N 15/0606 . . { by collecting particles on a support }G01N 15/0612 . . . { Optical scan of the deposits ( G01N 15/0625 takes precedence ) }G01N 15/0618 . . . { of the filter type ( G01N 15/0643 takes precedence ) }G01N 15/0625 . . . . { Optical scan of the deposits }G01N 15/0631 . . . . { Separation of liquids, e.g. by absorption, wicking }G01N 15/0637 . . . { Moving support }G01N 15/0643 . . . . { of the filter type }G01N 15/065 . . { using condensation nuclei counters }G01N 15/0656 . . { using electric, e.g. electrostatic methods or magnetic methods ( by investigatingindividual particles G01N 15/1031 , G01N 15/12 ) }G01N 15/08 . Investigating permeability, pore-volume, or surface area of porous materialsG01N 15/0806 . . { Details, e.g. sample holders, mounting samples for testing }G01N 15/082 . . { Investigating permeability by forcing a fluid through a sample }G01N 15/0826 . . . { and measuring fluid flow rate, i.e. permeation rate or pressure change }G01N 15/088 . . { Investigating volume, surface area, size or distribution of pores; Porosimetry }G01N 15/0886 . . . { Mercury porosimetry }G01N 15/0893 . . . { by measuring weight or volume of sorbed fluid, e.g. B.E.T. method }G01N 15/10 . Investigating individual particlesG01N 15/1012 . . { Calibrating particle analysers; References therefor }G01N 15/1031 . . { by measuring electrical or magnetic effects thereof, e.g. onconductivity orcapacity ( using nano-scale size effects, other than for sizing or counting, bytranslocation through nano-pores G01N 33/48721 ; involving the use of Coultercounters G01N 15/12 ) }G01N 15/1056 . . { Micro-structural devices for other than electro-optical measurement ( forelectro-optical measurement G01N 15/1484 ) }G01N 15/12 . . Coulter-countersG01N 15/1209 . . . { Details }G01N 15/1218 . . . . { concerning the aperture }G01N 15/1227 . . . . { Circuits }G01N 15/1245 . . . { Devices using more than one aperture }G01N 15/14 . . Electro-optical investigation, e.g. flow cytometersG01N 15/1404 . . . { Fluid conditioning in flow cytometers, e.g. flow cells; Supply; Control of flow }G01N 15/1425 . . . { using an analyser being characterised by its control arrangement }G01N 15/1427 . . . . { with the synchronisation of components, a time gate for operation ofcomponents, or suppression of particle coincidences }G01N 15/1429 . . . { using an analyser being characterised by its signal processing }G01N 15/1431 . . . . { the electronics being integrated with the analyser, e.g. hand-held devicesfor on-site investigation }