Need support?

Please leave a message

Bettersize - Laser Particle Size Analyzer & Laser Granulometry - Bettersizer ST

Bettersizer ST laser scattering particle size distribution analyzer includes the patented Dual Lens Optical System (DLOS) which provides a compact design without resorting to folding optics that are susceptible to misalignment caused by vibrations often present in most industrial labs.

The ST Laser Granulometry incorporates 86 high-speed detectors, which produces the high-resolution data from 0.1 to 1000 microns. This high-speed detector system delivers fast results, often in as little as 15 seconds.

Technical specifications

Measurement Range 0.1-1000 µm
Sample Inflow Method ultrasonic wet dispersion built-in automatic circulating and dispersing sampling system(it can be upgraded to be the solvent analyzer)
Repeatability error ≤1% (CRM D50)
Accuracy error ≤1% (CRM D50)
Measuring Principle Mie scattering theory
Measuring way SOP (Standard Operation Program)
Fastest measuring speed ≤10s
Laser light source imported semiconductor laser
Optical system dual lenses & automatic centering & automatic testing
Dew point temperature testing yes
Photodetector 86 pieces
Ultrasonic Disperser 50W
Circulating pool capacity 600 ml
Circulating Flowrate 3000 ml - 8000 ml/min
Voltage AC 220V 、50/60Hz
Volume/Weight 660x420x320mm/38KG

Key features

  • Measurement: Particle size
  • Particle size range: 0.1 to 1000µm
  • Dispersion type: Wet
  • Technology: Laser diffraction
  • Dual Lens Optical System (DLOS):
    The Dual Lens Optical System (DLOS) is a technical innovation developed by Bettersize. It detects both the forward and backscatter laser diffraction pattern. This breakthrough technology results in increased particle size measurement range without the added cost of a second light source. This single laser design provides for higher accuracy due to a consistent wavelength throughout the full measurement range.
  • Standard Operation Procedure (SOP):
    The Bettersize software offers an intuitive user interface.  The "Auto Test" function fully automates the entire test sequence.  With one mouse click, “Auto Test” initiates auto-alignment, collects a background, prompts the operator to add sample and analyzes the sample. 
  • Compact design:
    The rugged and compact design, coupled with the low cost of ownership of the Bettersizer ST makes it the ideal laser particle size analyzer for your quality control applications.
  • Auto Alignment Function:
    The auto alignment function of Bettersize ST laser scattering particle size distribution analyzer provides accurate and repeatable testing results.  The high speed servo motors allow the Bettersize ST laser diffraction grain size analyzer to perform an auto alignment prior to every test.

Bettersizer ST operating Video


Bettersize has become a significant player in the particle sizing business since 1995. We are a team of ~160 employees dedicated to share our expertise to satisfy your instrument and application requirements with reliable products and first-class services.


As the leading particle size analyzer manufacturer in China in terms of brand reputation, sales volume and most important quality, Bettersize spare no efforts on R&D each year. We offer a variety of products from basic to advanced research equipment, deliver precise analysis of materials from nanometer to millimeter, and assist scientists and engineers to understand material properties, facilitate research, and improve production efficiency.


Focused on technology innovation, product manufacturing, application research, and after sale service, Bettersize is making the particle size analyzer of China enter into the international advanced ranks.