Estimating the shape-factor of suspended particles in a liquid-borne particle counter

Aladár Czitrovszky, Attila Nagy, Péter Jani

Research output: Contribution to journalConference article


A new liquid-borne particle counter is described that utilizes an optimized optical set-up to determine the size distribution and concentration by two different methods and to estimate the shape-factor of the suspended particles. The aim of this optimization was to achieve the appropriate optical conditions for such type of measurement, viz. determining the geometry of the illumination and detection, and calculating the testing volume and dependence of the parameters of detected signal on the particle size for pulse height and pulse duration methods performed at the same illumination and detection conditions. The possibility of estimating the shape-factor of micron-size particles is discussed. The proposed measurement method was incorporated in a PC-controlled LQB-1-200-L-T liquid-borne laser particle counter developed on the basis of previous APC -03-2 and APC-03-2A air-borne particle counters and a LQB-1-200 liquid-borne particle counter.

Original languageEnglish
Pages (from-to)250-255
Number of pages6
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - Dec 1 1998
EventInternational Conference on Applied Optical Metrology - Balatonfured, Hungary
Duration: Jun 8 1998Jun 11 1998



  • Extinction
  • Gaussian beam
  • Laminar flow
  • Laser diode
  • Light detection
  • Particle counting and sizing
  • Particulate contamination
  • Shape-factor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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