The Lighthouse Boulder Counter portable airborne particle counters incorporate 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 Boulder Counter is even more portable. Boulder Counters feature 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.
Unit of Measure



N/A Lighthouse SOLAIR


N/A 5.0 to 100.0 µm

Flow Rate

N/A 1.0 ft³/min28.3 L/min

Display Size

N/A 5.7 in


N/A Color Thin Film Transistor (TFT) Touch Screen

Communication Interfaces

N/A Ethernet RS-485 Universal Serial Bus (USB) Universal Serial Bus (USB) Flash Drive

Language Support

N/A Chinese English French German Italian Japanese Korean Russian Spanish


N/A 2 Years

Construction Material

N/A Stainless Steel


N/A Aerospace Flight and Space Hardware Manufacturing Automotive Manufacturing Coating Processes Flat Panel Display Manufacturing Medical Device Manufacturing Paint Booth



  • 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
  • 3000-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



  • User Friendly Interface with Multiple Languages
  • International Support
  • Easy Integration to External Systems with OPC Server

Additional Information

Additional Information

N/A Boulder Counters 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. Boulder Counters are designed, manufactured and calibrated to standards that ensure particle counting accuracy and repeatability.

Our Philosophy

Creative thinking may mean simply the realization that there’s no particular virtue in doing things the way they always have been done
~Rudolf Flesch

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