Portable Particle Counters – 3900 Series

Compact and advanced particle counting technology for cleanroom monitoring

Request Quote

The Kanomax Portable Particle Counters, encompassing Models 3905, 3910, and 3920, stand out as the smallest 6-channel portable particle counters in the industry, offering unparalleled versatility and precision. Each model is tailored to different flow rate requirements: the 3905 operates at 1.0 CFM (28.3 LPM), the 3910 at 1.77 CFM (50 LPM), and the 3920 at a robust 3.5 CFM (100 LPM).

High Sensitivity and User-Friendly Interfaces

Models 3905 and 3910 boast a 0.3-micron minimum sensitivity, making them highly effective for detecting even the smallest particles. The 3920, with a 0.5-micron minimum sensitivity, compensates with a higher flow rate. All models feature large color touch screens, offering streamlined and user-friendly interfaces. These interfaces are programmed with various standards, aiding users in the measurement and certification processes efficiently.

Enhanced Environmental Monitoring Capabilities

An optional Climomaster hot-wire environmental sensor can be integrated, providing additional functionality to measure air velocity, temperature, and humidity. This addition transforms the 3900 Series into comprehensive tools for cleanroom certification and environmental monitoring.

Portability and Compliance

Notably lightweight and compact, these counters are incredibly easy to transport, perfect for on-the-go professionals. Fully compliant with ISA 21501-4 calibration standards, they enable the certification of cleanrooms up to ISO Class 2. The multi-standard modes facilitate compliance with various cleanroom standards such as ISO 14644, FS 209E, BS 5295, and EC GMP, simplifying the certification process.

Built-in Printer and Extensive Data Logging

Each model in the 3900 Series includes a built-in printer and an onboard data logging memory capable of storing up to 10,000 records. This feature allows for immediate printout of data and efficient record-keeping, enhancing the ease of reporting and analysis.

Cleanroom-Friendly Design and Extended Features

The devices are encased in a stainless steel, cleanroom-friendly body. They also offer a range of options for enhanced functionality, including a differential pressure sensor and an optional second Li-Ion battery for extended operation time.

The Ultimate Choice in Cleanroom Measurement

With their diverse range of options, high sensitivity, and user-friendly features, the Kanomax Portable Particle Counters 3900 Series are the most powerful instruments for cleanroom measurement available on the market. They represent an ideal choice for professionals seeking accurate, portable, and versatile particle counting solutions.

More Information

Navigate the tab section below to see this product’s Features & Benefits, Specifications, Resources, and more.

  • 0.3 µm, 0.5 µm, 1.0 µm, 3.0 µm, 5.0µm, 10.0µm
  • 28.3 LPM (1.0 CFM), 50 LPM (1.77 CFM), and 100 LPM (3.5 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
  • 50 LPM and 1 CFM flow rate respectively and a 0.3 micron 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
  • 3900 Series units 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


User Manual - Model 3920


Software User Manual (for 3900 Series)


Data Sheet (3905/3910) - English


Data Sheet (3905/3910) - Espanol


Data Sheet (3920) - English


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

View Video

Our sales representatives are here to help you find the right instrument for your application. Fast.

Request a quote today to find the product you need with expert assistance.

Request a Quote Today