SX-L301H Handheld Particle Counter

Short Description:

Handheld Particle Counter

The Sothis SX-L301H Handheld Airborne Particle Counter measures 0.3 to 10.0 μm with a flow rate of 0.1 CFM (2.83 LPM).

Easy to configure, this instrument displays up to 6 user-selectable size channels as well as temperature and relative humidity. View data and generate ISO 14644-1, CGMP or 209E reports on screen or via printer, real time through its versatile output options . The Sothis Handheld Particle Counter has a mass concentration mode that approximates density in μg/m³.


Product Detail

Product Tags

Sothis Handheld Particle Counter (Model SX-L301H) set the standard of instrumentation in cleanroom / operating room monitoring and verification, filter testing, IAQ investigation, data center cleaning and many more highly specialized and highly sensitive applications. These beautifully engineered devices boast some of the most highly advanced technology in the industry. A combination of accuracy and practicality, these devices count airborne particles with high quality performance.

Since their inception, Sothis Handheld Air Particle Counters have been the trusted choice in measuring instruments of by an ever-growing group of leaders in pharmaceutical, semiconductor, food and beverage industries. The model SX-L301H perform with reliability and accuracy as predecessors, but now have features that make them easier to use and that can gather measurements significantly faster. They have very large, full color 4.3 inch LCD touchscreens, which can actually display data graphically for speedy interpretation. Despite the fact that measurements can very easily be taken directly from the instrument, these new models also include the easiest options for transferring data to PCs and other devices. 



1.  Simultaneously sizes and counts particles in six fixed channels
2. Size sensitivities with 0.3μm, 0.5μm, 1μm, 3μm, 5μm, 10μm
3. 0.1CFM(2.83L/min) sample flow rate
4. 4.3 inch color touch screen display
5. External printer optional
6. One year warranty


1. Cleanroom Monitoring
2. Medical Device Mfg/Pkg
3. Filter Testing
4. Hospital Surgery
5. Suites/Pharmacy
6. Food/Beverage
7. Cosmetic Mfg'g/Pkg'g

You can download the technical datasheet

Technical Datasheet -L301H



Flow Rate

28.3L/min ±5% 1 CFM

relative tolerance of Repeatability


Particle Size Channels(μm)

0.3μm, 0.5μm, 1μm, 

3μm, 5μm, 10μm

Count Tolerance


Light Source

Laser Diode Imported from Japan

Max Concentration Limit

35000 particles/L


Imported from Japan, stable, energy-saving and environment-friendly


Zero Court


Verification standard

JJF1190-2008GB/T 6167-2007

Sampling Time


Delay Time


Count Modes


Sampling Points



Color 7inch touch screen

Sampling Location


Printing way

Built-in thermal printer

Cont.Operating Time

4 hours


AC220V 50Hz

Data Memory


5000 records

Li-ion charger

DC7.4V 3.4Ah

Recharge Time


8 hours



Communication Modes


Standard Accessories

rubber glove, isokinetic sampling head, self-cleaning filter, tripod, printing paper, generating data CD, USB data cable, portable protective box, charging adapter, black hose (inner diameter 6mm), manual, factory calibration report 



Humidity: 10%-70%RH;

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