Lasair III 350L Particle Counter


  • For ALL PRICING including QUOTATIONS, please contact us today
  • Type: Portable aerosol particle counter (remote & mobile)
  • Included: Battery and built-in printer
  • Data: USB and/or thermal printer
  • Usability: Lightweight and ergonomic
  • Channel: 6 channels, 0.3-25µm
  • Display: Large, 8.4 inch IR touchscreen can be used when wearing gloves
  • Calibration: Meets ISO 21501-4, ongoing service available
  • Flow rate: 50 LPM

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Delivery within 6-8 weeks
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We Offer Same Day Despatch on all stock items, Monday - Friday on orders placed before 16:00 GMT. Next day delivery is available to certain shipping Destinations.

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  • For ALL PRICING including QUOTATIONS, please contact us today
  • A brilliant new Portable Airborne Particle Counter with large IR touch screen for simplified use
  • Calculates & creates reports for ISO 14644-1 & EC GMP Annex #1
  • Sets the new standard for aerosol particle counters
  • On-board Pulse Height Analyser (PHA)
  • Suitable for GMP/ISO validations and testing
  • Particle size channels 0.3, 0.5, 1.0, 5.0, 10.0, 25.0um
  • Flow rate: 50 LPM ±5%
  • Maximum concentration: >350,000/ft3
  • Stores up to 3000 samples in 21CFR11 compatible data storage
  • Battery and built-in printer included
  • European Pricing shown
  • Ongoing calibration service available providing you peace of mind, the unit remains compliant according to ISO 21501-4. 
  • Free yearly calibration reminder service available.  Email
Special Delivery Details
Particle counters require calibration in our calibration lab before they can be shipped. If you require your particle counter on next-day delivery, please place your order by 12noon to ensure calibration can be completed same-day.
Country of Origin: USA
More Information
Brand EMS Particle Solutions
Type Continuous Monitoring
Lead time (if out of stock) 6-8 weeks
Pack Size 1
Size 301 x 327 x 259mm
Applications Cleanroom monitoring
Facility certification for ISO or EC GMP
Trend analysis
Statistical process control
Troubleshooting particle excursions
Manifold compatible
Portable or dedicated use
Country of origin USA
Technical data 5100(PAPC4)
Channels (ᄉm) - 0.3, 0.5, 1.0, 5.0, 10.0, 25.0
Flow rate - 50 LPM ᄆ 5%, 50 l/min
1mᄈ sample time - 20 minutes
Maximum concentration - > 355,000/ft
Counting efficiency - 50% ᄆ 10% for most sensitive threshold
Zero count - 7.07 counts/m3 (1CFM); 4.00 counts/m3 (50 LPM); 2.00 counts/m3 (100 LPM)
Communication modes - Ethernet or RS-232; USB data downloading; optional wireless Ethernet
Controlling software - Facility Net, Pharmaceutical Net, FacilityPro, Microsoftᆴ Internet Explorerᆴ 5.0+, Firefoxᆴ
Remote operation - Remote web browser operation; real-time download to Facility Net or Pharmaceutical Net
Reports - USB reports; sample printouts; cleanroom certification reports for ISO and EC GMP; averaging
Languages - English, French, German, Italian, Japanese (Kanji), Korean, Mandarin Chinese (Traditional or Simplified), Spanish, Russian
Display and printer - 8.4ヤ color VGA display (640 x 480); IR touch screen (IP65 rated); built-in thermal printer
Enclosure cleaning materials - Bleach, ethyl/isopropyl alcohol, peroxide/quaternary ammonium solutions
Sample tubing - 1/2ヤ, 8 m max. length
Power and battery - 100 - 264 V, 50 - 60 Hz, 150 W, Lithium battery: estimated operation 3 hr (single) 6 hr (dual) for 1 CFM unit
Dimensions (h, w, d) - 11.9 x 12.9 x 10.2 in (30.1 x 32.7 x 25.9 cm)
Weight - 13.2 lb (6 kg) without battery, 16.5 lb (7.5 kg) with two optional batteries
Data storage - 3,000 complete data sets. 21 CFR 11 compliance. Long-term data storage/analysis with DataAnalyst
Operating environment - Temperature: 0 - 30°C; Humidity: 5 - 95% RH non-condensing
Sterility Non-Sterile
Channel 6 Channel
Grading system Advanced
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Delivery and returns

We offer same day despatch on all stock items, Monday to Friday, with no minimum or maximum quantity.

Please note that the cut off point for same day despatch for stock items is before 16:00. If you place your order after this time and need your goods urgently, please give us a call and we’ll see what we can do.

Typically orders received after 16:00 will be despatched the following working day, providing goods are in stock.


Weight (KG) Next day before 17.30pm* Next day before noon Next day before 10.30am
1 - 20 £9.99 £13.50 £21.00
21+ +£0.36 per extra kg +£0.44 per extra kg +£0.48 per extra kg

*Please note that the 'Next day before 17.30pm' delivery can be made any time between 7.30am and 17.30pm.


We offer a range of delivery methods for countries outside of Mainland UK, for Northern Scotland, Northern Ireland, Isle of Man & Scilly Isles & Channel Islands. We also offer International Delivery for 50+ countries.

For more information about our delivery options and pricing click here

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