Solair series from the Lighthouse

Portable Particle Counter for Certification of Clean Rooms


The SOLAIR instrument series measures particle 6 or 8 channels simultaneously in the range of 0.3 – 100 microns. Up to 3000 measurements and 50 sampling recipes can be saved. A variety of interfaces and protocols (USB, LAN / WLAN, RS-485, MODBUS, OPC) also allow stationary use.


The particle counter features intuitive and icon-driven menus that are easy to learn and use.

“Longlife” laser technology results in a mean time to failure (MTTF) of more than 20 years.

Developed, produced & calibrated ISO 21501-4 compliant to ensure accurate particle counting,

Report wizard for Cleanroom Pass/Fail Reports according FS-209E, ISO-14644-1 or EU GMP Annex 1


  • Simultaneous display of 6 or 8 particle size channels
  • Menu navigation in English (other languages such as DE, FR, IT, ESP configurable)
  • Large 14.5 cm color TFT touch screen display with zoom function
  • Stainless steel housing with sealed inlet nozzle for easy wipe down
  • Built-in thermal printer with user definable printouts
  • Removable Lithium battery
  • Communication interfaces – USB, USB flash drive, RS-485 (ASCI), Ethernet (TCP/IP) and optional Wifi
  • Integration via Modbus or OPC server function in external monitoring systems or building management systems
  • Supports up to 4 analog inputs for optional environmental sensors
  • Report wizard for Cleanroom Pass/Fail Reports according FS-209E, ISO-14644-1 or EU GMP Annex 1
  • Software LMS XChange for datadownload & LMS Express for long term data storage and reporting included
  • 21 CFR Part 11 compliant secure data transfer via USB flash drive or Ethernet
  • Comprehensive validation manual for GMP regulated areas
  • ISO 21501-4 Compliant. The Boulder Counter meets the JIS standard.
ModelFlow RateChannels, Par ticle Size Range
Solair 3100/510028.3 l/ min (1 cfm)6 oder 8-channels, 0.3 - 25.0 μm
Solair 3200/520050.0 l/min or 56.6 l/min6 oder 8-channels, 0.3 - 25.0 μm
Solair 3350/5350100.0 l/min6 oder 8-channels, 0.3 - 25.0 μm
Boulder Counter 28.3 l/ min (1 cfm)6-channels, 0.5 - 100.0 μm
  • Cleanroom particle monitoring
  • Air Conditioning and Ventilation: Filtertesting and Filterscanning
  • Facility certification testing according ISO 14644-1, EC GMP Annex 1 or FS209E
  • Trend analysis
  • Tool, equipment and filter testing
  • Statistical process control
  • Detection of particle sources & troubleshooting particle excursions
  • Multi-point facility monitoring: 6 or 32 port manifold system for SOLAIR 3100/5100
  • Compressed gas monitoring with high pressure diffuser for SOLAIR
  • Portable or dedicated use

Boulder Counter model for large particles

  • Aerospace – construction of precision engines, flight and space hardware
  • Flat panel display fabrication
  • Medical device manufacturing
  • Precision machining and paint