Calibration Size Standards


In the range of 100 nm - 30 mm our calibration standard grade polystyrene particles are among the best characterized particles standards currently available. The accurate diameter of these particles is determined by methods described by the National Institute of Standards and Technology (NIST, USA), like:

  • Transmission electron microscopy
  • Scanning electron microscopy
  • Optical microscopy
  • COULTER COUNTER® particle size analyzer with HDF system

The measuring instruments are calibrated using standards obtained from the Community Bureau of Reference (BCR, Belgium: Standards RM 165, 166 or 167) and from the NIST (SRM 1690, 1691 or 1692), allowing traceability of our particle standards to internationally recognized ones.

The excellent quality of the particles supplied by us is demonstrated by the figures below. The certificate of analysis of each batch includes particle diameter and standard deviation as well as some physical data (i. e. solids content, particle number per ml, specific weight, refractive index).

Certified calibration size standard particles:

  • Micro particle size standard based on polystyrene monodisperse 0.1-30 mm

Package size:

  • 2% dispersion: 5, 10 ml


SEM image of PS-particles


M image of PS-particles

Size distribution curves of three different calibration standard particles

Size distribution curves of three different calibration standard particles measured on the COULTER COUNTER®

Calibration Size Standards