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Digital image processing as it is used in the CAMSIZER® by Retsch Technology is one of the most accurate methods to determine the particle size distribution of flowable bulk goods. It has become a well established method in addition to sieve analysis and laser diffraction in the size range of 30 µm to 30 mm and exceeds their capabilities with regards to precision, reproducibility and obtained information by far.

With the CAMSIZER, the sample is fed in from a feed channel so that all particles fall through the measurement field. During the measurement procedure two digital cameras (CCD) perform different tasks. The Basic Camera (CCD-B) detects large particles whereas the Zoom Camera (CCD-Z) records the small ones.  The contact-free optical measurement is carried out in real time and simultaneously obtains all the required information about the particle size.

A digital picture is taken of each particle so that in addition to the particle size it is also possible to obtain information about the particle shape. The size distribution results can be easily adapted to those of sieve analysis so that a comparison is possible at all times, regardless of which sieving method was used. 


  • Wide measuring range from 30 μm to 30 mm
  • Very short measurement time (2-3 minutes)
  • 2 Full Frame Matrix Cameras
  •  100 % higher resolution, extreme dept of sharpness
  • Excellent compatibility to sieve analysis
  • Highest reproducibility of measuring results
  • Particle counting and determination of density possible
  • Optimized, process-oriented software
  • FDA conformity: 21 CFR Part 11
  • AutoSampler and Online version available

 Download brochure at 

Retsch Technology is one of the leading suppliers in the market for optical particle measurement. The product range includes optical systems for measuring the particle size distribution of dispersions, powders and granulates as well as wet measurement of particles in suspensions, emulsions and colloids

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