Particle Counters

Laser Particle Counter Model Sigma311

Accurate, dependable, user friendly, compact and light weight

Sigma311’ s large color display shows cumulative and differential particle counts of 3 particle sizes simultaneously. The middle particle range can easily be changed by a user. Sigma311’ s maximum concentration of 113267 particles/m3 (4,000,000 particles/ft3) and up to 8,000 data set record capabilities is the highest in the market. Data can be checked on the unit display and/or easily downloaded to your PC via USB cable and saved as a CVS file which is transferable to Excel. P311 is accurate, dependable, user friendly, compact and light weight.


Range: 0.3 µm & 5.0 µm fixed, and middle channel selectable from 0.5, 1.0, 2.0, or 2.5 µm
Superior Maximum Concentration; 113267 particles/m3 (4,000,000 particles/ft3)
Large Color Display
Cumulative and Differential Count
Data Download Software
USB for Data Download and Power
Streamlined & Lightweight
Great Energy Conservation
User Friendly, Easy Operation
Included Accessories:AC Adaptor, Isokinetic Inlet, USB Cable, Zero Filter, Software 4 x AA Batteries with Charger, Calibration Certificate, Quick Guide, Aluminum Carry Case, Operating Manual on CD
Optional Accessories: Carrying Case, Tripod


Size Range: 0.3-5.0 µm
Channel Sizes: 0.3 µm and 5.0 µm fixed; 0.5, 1.0, 2.0, or 2.5 µm selectable middle channel
Counting Efficiency: 50% at 0.3 µm; 100% for particles > 0.45 µm (per JIS)
Concentration Limits: 4,000,000 particles / ft3 at 5% coincidence loss
Light Source: Laser diode
Zero Count Level:
Sampling Time: 1 second to 99 minutes 59 seconds (Configurable)
Sampling Frequency: 1 to 2000 cycles or continuous (Configurable)
Sample Output: Internal HEPA filter
Vacuum Source: Internal pump
Communication Mode: USB
Data Storage: 8000 sample records
Display: 3.5-inch 320 x 240 Color LCD
Power: DC 5V 0.7A (Mini USB TYPE-B)
Battery: 4 x AA
Battery Life: Up to 4.5 hours of continuous use (LCD Backlight low, 2400mAh Ni-MH Battery)
Dimensions (L x W x H): 178x90x47mm (without isokinetic inlet)
Weight: 480g (without batteries)
Standards: JISB9921, ISO 21501-4
Warranty: 1 year limited warranty
Operating Conditions: 5° to 35°C 20% to 95%RH non-condensing
Storage Conditions: -20° to 50°C Up to 98%RH non-condensing

ISO Cleanroom Certification (ISO Class 4>)
Spot checking within cleanroom environments
Spot checking within sterile environments
Particle source identification during filter testing
Filter Testing
Indoor Air Quality Investigations
Quality Control

Laser Particle Counter Model Sigma611

Sigma611 is an accurate, user friendly 6-channel handheld particle counter.
Its large color display shows 6 channels of cumulative and different particle counts simultaneously. Sigma611 saves up to 10,000 sample data in the memory, which can be reviewed on the unit display and/or easily downloaded to your PC via USB cable. Temperature and humidity can also be monitored with the optional probe. Sigma611 complies with ISO 21501-4 and comes with a two-year warranty. With excellent quality and reliable performance, Sigma611 is the best solution for professionals who validate ISO cleanrooms (Class 5 - 9) and investigate indoor air quality.

- 6-Channel Simultaneous Measurements
- Channel Range: 0.3-10.0μm
- Flow Rate: 0.1CFM (2.83LPM)
- Optional Temperature and Humidity Probe
- Large Color Display
- Maximum concentration: 4,000,000 particles / ft^3
- Data Download Software Included
- Buffer Memory: 10,000 records
- ISO 21501-4 and JIS B9921 Compliant

Partical analyzer

- ISO Cleanroom Certification (ISO Class 5 - 9)
- Point Measurements at Cleanrooms
- Particle Source Investigation
- Filter Testing and Leak Detection
- Indoor Air Quality Investigations
- Quality Control

Portable Particle Measurement Laser Model 8303

0.3 μm @ 0.1 CFM (2.83 LPM)
The Handheld Particle Counter 8303 measures 0.3 μm to 25.0 μm

with a flow rate of 0.1 CFM (2.83 LPM).

Easy to configure, this instrument displays up to 3 user-selectable size channels as

well as (optional) temperature and relative humidity. View data and generate

ISO 14644-1, EU GMP Annex 1 or FS 209E reports. Export to Particles Plus

data-software. The 8303 mass concentration mode approximates density in μg/m³

and allows for density and refractive index corrections to ensure accuracy.

All Particles Plus counters meet ISO 21501-4 and JIS B9921. The 8303 ensures

compliance with an on-board pulse height analyzer.