A new sizing method for liquid-borne particles with high dynamic range

Aladár Czitrovszky, Attila Nagy, Tamás Mosoni, Peter Jani, Károly Bodnár, Arpád Illés

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 main benefit of the developed device is the high dynamic range of the size determination of the micron-size liquid-borne particles and the possibility of estimating their shape-factor. 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 liquidborne particle counter.

Original languageEnglish
Pages (from-to)225-229
Number of pages5
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - Aug 19 1998
Event5th Congress on Modern Optics, OPTIKA 1998 - Budapest, Hungary
Duration: Sep 14 1998Sep 17 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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