The Highest Resolution for Sizing and Counting Particles. The Multisizer 3 COULTER COUNTER is the most versatile particle size analyzer available today for a multitude of size range materials. It provides size and volume distributions in number, volume, surface area and mass, with an overall range of 0.4 micro-1200 micro. The Multisizer 3 uses The Coulter Principle (Electrical Sensing Zone Method) to measure particle volume, a direct measurement of a physical property of the particle. While retaining and enhancing the analogs circuits developed and refined by Coulter over many years, the Multisizer 3 incorporates the latest advances in electronics using state-of-the-art digitizing circuits. High-speed digitalization of the signal allows the use of pulse area analysis and other techniques for additional particle characterization. The resulting measurement data can be analyzed and formatted in numerous ways, or stored and re-analyzed at a later date with no need to analyze the sample again. The measurement data for each particle analyzed is stored. The instrument automatically corrects for coincidence. For biological or industrial applications, in quality control or research, the Multisizer 3 you will get the high-resolution and accuracy you demand.


Platform Other PC
Max Capacity Volume Range 3 x 400 mL
Channels/Standard Sizes Binning (3-300 channels, number & range reprocessable as necessary)
Aperture Current Accuracy ±0.4%
Aperture Current Range 30 µA in 0.2 µA steps to to 6000 µA in 0.2 µA steps to
Aperture Diameter Range 0 µm to to 1600 µm to
Sample Volume 4-400 mL
Digital Pulse Processor Proprietary high-speed digitization of the signal
Metering System Mercury-free wide range metering pump
Volumetric Mode Continuously selectable from 50 µL-2,000 µL
Volumetric Pump Accuracy >99.5%
Polarity Error #N/A
Humidity Restrictions 10%-80% (non-condensing)
Temperature Range 10°C - 40°C
Environmental Conditions Safe for indoor use only
Power Requirements 100-240 VAC, 50/60 Hz, 50 W (65 W max)
Weight 34 kg / 75 lb
Width 43 cm / 16.9 in
Depth 64 cm / 25.2 in
Height 45 cm / 17.7 in
Additional Information Measures particles as small as 0.4 μm • Easy to operate. Instrµment completely controlled through the computer with user-friendly software. • Digital Pulse Processor. Real-time measurements. Suitable for both aqueous and organic electrolytes. • Environmentally friendly, mercury-free metering system. • New aperture system (no grease) makes it easy to reconfigure for a desired size range. • Resolution can be selected from 4 to 300 channels at any selected range. • Multiple security levels.Enables 21 CFR Part 11 Compliance. • Software not license restricted. Can be installed on multiple computers for offline processing


The listed regulatory status for products correspond to one of the below:
IVD: In Vitro Diagnostic Products. These products are labeled "For In Vitro Diagnostic Use."
ASR: Analyte Specific Reagents. These reagents are labeled "Analyte Specific Reagents. Analytical and performance characteristics are not established."
CE: Products intended for in vitro diagnostic use and conforming to European Directive (98/79/EC). (Note: Devices may be CE marked to other directives than (98/79/EC)
RUO: Research Use Only. These products are labeled "For Research Use Only. Not for use in diagnostic procedures."
LUO: Laboratory Use Only. These products are labeled "For Laboratory Use Only."
No Regulatory Status: Non-Medical Device or non-regulated articles. Not for use in diagnostic or therapeutic procedures.