Portable Particle Counters – 3900 Series

6-channel portable particle counters for cleanroom certification

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Kanomax Portable Particle Counters – Models 3905, 3910, and 3920 are the smallest 6-channel portable particle counters in the industry. The 3905 measures at 1.0 CFM (28.3 LPM), the 3910 at 1.77 CFM (50 LPM), and the 3920 at 3.5 CFM (100 LPM). Both the 3905 and 3910 features 0.3-micron minimum sensitivity, large color touch screens with a streamlined and user-friendly interface programmed with different standards to help guide users through the measuring and certification process. Model 3920 has a 0.5-micron minimum sensitivity, but again, with a higher flow rate.

An optional Climomaster hot-wire environmental sensor is available. It provides the ability to measure air velocity, temperature and humidity, making the 3900 Series Portable Particle Counters the ultimate tools for cleanroom certification.

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  • 0.3 µm, 0.5 µm, 1.0 µm, 3.0 µm, 5.0µm, 10.0µm
  • 28.3 lpm (1.0 cfm) or 50 lpm (1.77 cfm) flow rate speeds the sampling process
  • Simultaneously measures and displays up to 6 particle sizes from 0.3 to 10 microns
  • Fully compliant with ISO 21501-4 calibration standard
  • Enables you to certify cleanrooms up to ISO Class 2
  • 50LPM and 1 CFM flow rate respectively and a 0.3micron sensitivity.
  • Upload from blueprint your cleanroom layout
  • Optional CLIMOMASTER environmental sensor provides the ability to measure air velocity, temperature and humidity making these instruments the ultimate tools for cleanroom certification.
  • Intuitive ICON-driven screens and menus are easy to learn and simple to use
  • NIST TRACEABLE CALIBRATION Certificate* comes standard
  • 3910/3905 can store up to 10,000 records of particle count data from up to 6 particle channels and the configurable recipe database can store up to 50 recipes for sampling and reports.
  • All data can be quickly and reliably transferred to a computer, a Facility Monitoring System or Building Automation System.
  • Secure data transfer to a USB Flash Drive
  • 21 CFR Part 11 compliant with IQ/OQ documentation available
  • Built-in printer and onboard datalogging (up to 10,000 records) is standard on both 3910 /3905
  • Flexible communication with these instruments is made possible by the integrated Ethernet, RS-485, USB and Flash Drive memory card interfaces
  • Monitor and verify cleanrooms to meet ISO 14644: 2015 cleanroom classification
  • Monitor surgical rooms
  • Filter testing
  • IAQ investigation
  • Data center cleaning

Main Unit SpecificationsMain Unit Specifications
Light SourceLaser diode
Measuring Particle Size0.3, 0.5, 1.0, 3.0, 5.0, 10.0 (μm)0.5, 0.7, 1.0, 3.0, 5.0, 10.0 (μm)
Flow Rate1.0 CFM (28.3 LPM)1.77 CFM (50 LPM)3.5 CFM (100 LPM)
Counting Efficiency50±20% at 0.3μm50±20% at 0.5μm
Concentration Limit500,000 particles/ft³ at 10% coincidence loss300,000 particles/ft³ at 10% coincidence loss
Sampling Time6sec ~ 23hours 59min 59sec (configurable)
Interval Time6sec ~ 23hours 59min 59sec (configurable)
Zero Count LevelLess than 1 count / 5 minutes
PrinterBuilt-in thermal printer
Display6.4 inch color touch screen
InterfaceEthernet, USB, Memory card slot (MMC)
Data Storage10,000 data points
SecurityPassword authentication and management, secure data, and audit trails (meets 21 CFR Part 11 compliance)
StandardsISO 21501-4, JIS B9921, CE
PowerAC 100 – 240 V or Li-ion Battery
DimensionsW 7.9 x D 7.9 x H 8.1 inch
Weight14.2 lbs (6.44 kg)
Warranty2 year
Environmental SensorAir Velocity, Temperature, Relative Humidity and Pressure
What’s includedQuick-start guide, AC adapter, zero filter, Isokinetic probe with 79 inch (2m) tubing, inlet nozzle, data processing software, memory card, 2 rolls of cleanroom-grade printer paper, 1 x Li-ion battery and calibration certificate

User Manual - Model 3905


User Manual - Model 3910


Software User Manual (for 3905/3910)


Data Sheet - English


Data Sheet - Espanol


Application Note - Guide to Selecting a Particle Counter for Cleanroom Certification


Application Note - Making ISO Cleanroom Certification Easy with Kanomax Particle Counters


Application Note - Let Kanomax Help You Meet USP 797 Regulations






  • 3910 Zero Filter: Model 3910-04
  • 3910 Validation Document (IQ/OQ): Model CRVAL
  • 3910 Li-ion Battery: Model 3910-12
  • 3910 Pressure Sensor with Cable: Model 3910-11
  • 2M Probe Cable: Model 6531-06
  • 5M Probe Cable: Model 6531-09
  • 10M Probe Cable: Model 6531-10
  • 20M Probe Cable: Model 6531-11

Kanomax Portable Particle Counter - Overview

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