The SOLAIR Boulder Counter incorporates our Extreme Life Laser Diode Technology sensor to produce the industry’s longest laser diode life of 20+ years MTTF (based on continuous 24/7 operation). Designed to use a new, lighter extended-life battery and external AC adapter, the SOLAIR Boulder Counter is even more portable.


The SOLAIR Boulder Counter features one of the industry’s best User Interfaces (UI) to configure and operate the instrument with intuitive ICON-driven screens and menus that are quick to document for SOPs, easy to learn and simple to use. The SOLAIR Boulder Counter can store up to 3,000 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 a Building Automation System. Secure data transfer (per 21 CFR Part 11) to a USB Flash Drive can be accomplished by using the Lighthouse Secure Data transfer feature and LMS Express or Express RT software.


Flexible communications with these instruments is made possible by the integrated Ethernet, RS-485, USB and USB Flash Drive interfaces. The SOLAIR Boulder Counter is designed, manufactured and calibrated to standards that ensure particle counting accuracy and repeatability.

Lighthouse Solair Boulder Counter Portable Particle Counter

    • 5.0μm to 100.0μm sensitivity
    • 1.0 CFM (28.3 LPM) Flow Rate
    • Simultaneous Display of up to 6 Particle Sizes
    • 21 CFR Part 11 Compliant Secure Data Transfer via USB Flash Drive 
    • Extreme Life Laser Diode Technology
    • > 20-year MTTF Laser Lifespan
    • Thermal Printer
    • Stainless Steel Construction
    • Multiple Communication Interfaces - USB, RS-485, Ethernet and USB Flash Drive
    • 5.7-inch Color TFT Touch Screen Display
    • 3,000 record Data Storage Memory
    • 50-record Configurable Recipe Database
    • User-Definable Printouts
    • Open Architecture Connectivity with OPC Server
    • Report Wizard for Cleanroom Pass/Fail Reports: FS-209E, ISO-14644-1 or EU GMP Annex 1
    • Multiple-language Support: English, French, German, Italian, Spanish, Chinese, Russian, Japanese, Korean