1100 LD 3100 5100 3350 Boulder Counter


Size Range 0.1 - 1.0 μm
Optional ranges up to 5.0 µm
0.3 - 25.0μm 0.5 - 25.0μm 0.3 - 25.0 µm 5.0 - 100.0 um
Channel Sizes Standard: 0.10, 0.15, 0.2, 0.25, 0.3, 0.5, 0.7, 1.0μm Standard: 0.3, 0.5, 1.0, 3.0, 5.0, 10.0 µm
Standard: 0.3, 0.5, 1.0, 5.0, 10.0, 25.0 µm
8-Channel: 0.3, 0.5, 0.7, 1.0, 3.0, 5.0,7.0,10.0 µm
Standard: 0.5, 0.7, 1.0, 3.0, 5.0, 10.0 µm
Standard: 0.5, 1.0, 3.0, 5.0, 10.0, 25.0 µm
8-Channel: 0.5, 0.7, 1.0, 2.0, 3.0, 5.0, 7.0,10.0 µm
Standard: 0.3, 0.5, 1.0, 3.0, 5.0, 10.0 µm
Optional: 0.3, 0.5, 1.0, 5.0, 10.0, 25.0 µm
Standard: 5.0, 10.0, 25.0, 40.0, 50.0,100.0µm 
Flow Rate 1.0 CFM (28.3 LPM) 100 LPM 28.3 LPM
Counting Efficiency 50% @ 0.1μm; 100% @ sizes > 0.15μm Per JIS B 9921 and ISO 21501-4 50% @ 0.3 µm; 100% @ sizes
> 0.45 µm
50% @ 0.5 um; 100% @ sizes
> 0.75 µm
50% @ 0.3 µm; 100% @ sizes > 0.45 µm 50% @ 5.0 um
Concentration Limits 500,000 Particles / ft3 (17,150,000 / m3) @ 5% Coincidence Loss 1,000,000 particles/ft3
(35,300,000/m3) @ 10% coincidence loss
Suitable for ISO classes 1-8 cleanrooms
400,000 particles/ft3 (14,120,000/m3)
@ 10% coincidence loss
Suitable for ISO classes 1-8 cleanrooms
500,000 particles/ft3 @ 5% coincidence loss 
Light Source Long Life Laser Diode Extreme Life Laser Diode Technology with >20-year Mean Time To Failure (MTTF)
Dimensions 14.65"Lx8.0"Wx10.4"H (37x20x26cm) 9.5"Lx8.0"Wx10.2"H (24.13x20.32x25.9cm) 14.65"Lx8.0"Wx10.4"H (37x20x26cm) 9.5"Lx8.0"Wx10.2"H (24.13x20.32x25.9cm)
Weight With battery: 23.55 lbs (10.68 kg)
Without battery: 20.45 lbs (9.28 kg)
With battery: 13.40 lbs (6.08 kg)
Without battery: 12.00 lbs (5.44 kg)
With battery: 26.15 lbs (11.86 kg)
Without battery: 23.05 lbs (10.46 kg)
With battery: 13.40 lbs (6.08 kg)
Without battery: 12.00 lbs (5.44 kg)
Zero Count Level < 1 count / 5 minutes (per JIS B 9921)
Calibration Meets ISO 21501-4 Calibration using NIST Traceable PSL Spheres, DMA and Condensation Particle Counter
Count Modes Automatic, Manual, Beep, Concentration, Cumulative/Differential, Real Time (with LMSNet or LMS Express RT software)
Data Storage 3,000 Sample Records, Rotating Buffer (particle and environmental data with location and time)
Communication Modes USB, Ethernet, RS-485 and Secure Data Transfer (LSDT) to and Storage on USB Flash Drive
Supporting Software LMS Express and Express RT; LMS Pharma
Environmental Sensors Optional (up to 4) temperature/relative humidity, air velocity, differential pressure or others
Touch Screen Display 5.7-inch (14.47 cm) Color TFT Touch Screen Display
Reports Pass/Fail Report Wizard for ISO-14644-1, EU GMP Annex 1 and FS-209 Report Formats
Alarms Integrated alarm buzzer and external alarm connector. Alarms on counts, low battery, sensor failure
Sample Output Internally Filtered to 100% @ 0.1μm, Optional HEPA Filtration for Cooling System Exhaust Internally filtered to HEPA standards (>99.97% @ 0.3μm)
Vacuum Source Internal closed-loop controlled pump. Allows the use of 3/8" ID sample tubing of up to 12 meters (40 feet) @ 50 & 100LPM
Enclosure Stainless Steel
Power 100-240 VAC, 50-60 Hz, External AC/DC Adapter
Battery Optional: Li-Ion, Removable & Rechargeable (typical recharge time 7.5 hours)
Languages English (U.S.), French, German, Italian, Spanish, Chinese, Russian, Japanese, Korean

Environmental Conditions

Operating 50°F to 104°F (10°C to 40°C) / 20% to 95% non-condensing
Storage 14°F to 122°F (-10°C to 50°C) / Up to 98% non-condensing


Included Operating Manual on CD; Isokinetic Sample Probe with Tripod and Tubing; Purge Filter; Power Cable and Spare Fuse; LMS XChange and Express Software; Printer; Printer Paper
Optional Printed Operating Manual; Network Adapter; Wireless Network Adapter; Internal Removeable, Rechargeable Battery; Carrying Case with Wheels; Cleanroom Cart; Temperature/Relative Humidity Probe; Air Velocity Probe; Differential Pressure Probe; Filter Scanning Probe; High Pressure Difuser; 32-Port Universal Manifold; LMS Express RT Software; LMSNet Software; Validation Documentation Wireless Network Adapter; Removable Rechargeable Li-Ion Battery; Carrying Case with Wheels; Temperature/Relative Humidity Probe; Differential Pressure Probe; Intelligent Filter Scanning Probe; Air Velocity Probe; Spare Removable
Rechargeable Li-Ion Battery; External Battery Charger; LMS Express, RT Software; LMS Pharma Edition Software; LMS Standard Software; Validation Documentation; Printed Operating Manual; Cleanroom Cart


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Solair 1100LD

The SOLAIR 1100LD (Laser Diode) leads the industry as the first of its kind portable particle counter with 0.1 micron sensitivity and 1.0 CFM (28.3 LPM) flow rate using laser diode technology. Conventional HeNe (Helium Neon) particle counters require frequent cleaning, periodic Laser tube replacement and suffer low concentration limits. The SOLAIR 1100LD is designed to operate in ISO Class 1 to Class 7 cleanrooms without concerns of it degrading its environment or exceeding concentration limits. 

Number 1 in Versatility

The SOLAIR line of particle counters is the most versatile on the market today. 

Whether you're certifying your cleanroom to ISO standards, performing routine testing, counting particles in your compressed gas lines, scanning your HEPA filters for leaks, challenge testing your HEPA filters or measuring environmental parameters such as TRH, DP, or AV, the SOLAIR portable particle counter is the right instrument to get the job done.

Cleanroom Certification

  • Whether you are certifying to current ISO 14644 standards, EU GMP Annex 1 or Federal Standards 209E, the SOLAIR has you covered with its certification report wizard.

Routine Testing

  • Routine testing is a breeze with the intuitive interface, zoom screen and on board sample recipes


  • With beep and concentration sample modes, the SOLAIR will simplify the identification of particle sources within your clean room.

Compressed Gas Testing

  • The SOLAIR can be used to test for particle counts in compressed air by utilizing a high pressure diffuser or high pressure controller.  Particles can be tested down to 0.1 micron.

 HEPA Filter Scanning

  • The scanning of HEPA filters is a critical step to ensure the integrity of the HEPA filter and overall cleanliness of the cleanroom.  The ScanAir attachment from Lighthouse makes filter scanning an easier operation.

 HEPA Filter Challenge Testing

  • Monitoring of other environmental parameters such as Temp, Humidity, Differential Pressure or Air Velocity

Other Environmental Testing

  • The SOLAIR can record data from up to 4 environmental sensors that plug into and are powered by the SOLAIR.  Data is recorded into the 3,000 record data buffer and can be downloaded along with the particle count data to your computer of via USB key.

Better Technology Leads to Greater Flexibility

  • The SOLAIR 1100 uses a laser diode as its laser source.  This laser technology provides the SOLAIR 1100 with a 10x increase in concentration limits relative to the competition.  The higher concentration limit allows the instrument to be used in ISO Class 1 to Class 7 environments.


Save Time

Spend less time configuring your particle counter and more time counting particles.  The SOLAIR features one of the industry’s best and easy to use touch screen interface (UI).   With ICON-driven menus, concise layout and enhanced responsiveness, sample configuration is a breeze. 

The intuitive interface reduces learning uptime for new users and simplifies the writing of SOP’s for operation.

 For cleanroom certification the SOLAIR has an integrated report wizard that makes clean room certification a breeze.  Once the basic sample parameters are input the wizard will prompt the end user to move to the next sample location which helps to ensure no sample locations are missed.

The configurable recipe database can store up to 50 recipes for sampling and reports.  These recipes reduce operator configuration errors as well as setup time.


Ease of Use

Lighter is better and the SOLAIR 1100 is the lightest 0.1 micron particle counters on the market, at only 23 lbs. without battery and 26 with a battery. 

The SOLAIR can be powered via onboard battery or plugged directly into a power outlet for extended use.   With the fastest battery recharge time of any portable on the market the SOLAIR offers unrivaled uptime.

With beep and concentration sample modes, the SOLAIR will simplify the identification of particle sources within your clean room.

Data from the SOLAIR can be downloaded directly to a standalone software package or a real time monitoring system from Lighthouse.

Flexible communications with these instruments is made possible by the integrated Ethernet, RS-485, USB and USB flash drive interfaces. 



The line of SOLAIR portable particle counters incorporate laser diode technology.  

The vacuum system within the SOLAIR was designed with closed loop feedback to ensure accurate sample volumes.  The vacuum pump was designed and built by Lighthouse to ensure long term reliability.

The SOLAIR 1100LD is designed, manufactured and calibrated to ISO 21501-4 to ensure particle-counting accuracy.

The SOLAIR can store up to 3,000 records of particle count data from up to 8 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 software.


Key Features:

  • 1.0 CFM (28.3 LPM) flow rate
  • Up to 8 particle sizes
  • Number 1 in class for versatility
  • Industry's Best User Interface
  • ISO 21501-4 Compliant
  • One of the lightest portables on the market
  • Stainless steel construction
  • 21 CFR Part 11 compliant secure data transfer via USB flash drive
  • Report wizard for cleanroom pass/fail reports: FS-209E, ISO 14644-1 (2015 version)  and EU GMP Annex 1
  • 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
  • Multiple language support:  English, French, German, Italian, Spanish, Chinese, Russian, Japanese, Korean

Type Part # Title Paper Size File Size Download
Brochure - Solair 1100LD, 3100, 3350, 5100, Boulder Counter Letter 4.30 MB DOWNLOAD
Datasheet - Solair 1100LD Letter 354.70 KB DOWNLOAD
Operating Manual 248083395-1 R9 Solair 1100LD Gen E A4 3.50 MB DOWNLOAD
Operating Manual 248083395-1 R9 Solair 1100LD Gen E Letter 3.57 MB DOWNLOAD