Multisizer 4e Coulter Counter

The Multisizer 4e Coulter Counter is a highly versatile particle counting and characterization system.

It uses the Coulter principle to detect particles via electrical zone sensing, regardless of the particle’s nature or optical properties. This makes it an ideal tool for detecting and counting a wide variety of particles, such as:

  • Mammalian cells
  • Bacteria
  • Yeast
  • Abrasives
  • Toner particles
  • Cell aggregates
  • Spheroids
  • Large protein aggregates

Documentation and Application Notes

Choose a Multisizer 4e Model

Multisizer 4e Coulter Counter Features


  • Aperture sizes from 10 µm - 2000 µm in diameter for current & future needs
  • Multiple aperture options & data overlay capability for analyzing complex samples over wide particle size distribution

Sample Detection

  • Analyze materials in aqueous or non-aqueous solvents
  • Ideal for biological or non-biological samples
  • Detect particles regardless of material type or optical properties

Rapid Particle Counting

  • Typical sampling rates up to 10,000 counts per second
  • Detect & count particles from 0.2 µm - 1600 µm in diameter
  • Sample volumes as small as 5 mL

Data Management

  • Digital pulse data can be stored & re-analyzed as needed
  • CFR 21 Part 11 compliant software for audit control & security
  • Variety of calibration beads & V-check validation controls

Multisizer 4e Coulter Counter Specifications

Item Specifications Referenced A36400

Setting up a Multisizer 4e with an Accuvette

Multisizer 4e Coulter Counter Resources

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Technical Documents