Bettersizer S3 Plus

Complete particle size and shape analysis on one unit

Seamlessly combined laser diffraction and automated imaging in one model, Bettersizer S3 Plus not only achieves a wide size range from 0.01 to 3500μm, but also analyzes all size and shape parameters of a great variety of bulk materials. The reliable performance and user- friendly operation mode make Bettersizer S3 Plus the best choice for research in need of material characterization.

  • Measurement: Particle size and particle shape
  • Particle size from 0.01µm to 3500µm
  • Particle shape from 2µm to 3500µm
  • Dispersion type: Wet
  • Technology: Laser diffraction + Automated imaging
  • Automatic refractive index measurement


Features and Benefits

• Measuring range:
Particle size from 0.01μm to 3500μm.
Particle shape from 2μm to 3500μm.

• Dual Lenses & Oblique Incidence Optical System (DLOIS): eliminates the fitting error of double beam system, enlarges detection angle (0.02 to 165 degree) and assures high sensitivity, resolution and accuracy.

• Particle size & shape: two CCD cameras with 120 fps, 1.3 Mpixel, and lenses 0.5x and 10x. It can combine particle size and shape (0.5x), separate 0.5x or 10x image, 0.5x and 10x joint image to measure particle shape.

• Refractive index measurement: pre-determine the refractive index of materials; improve the accuracy of measurements of materials with unknown refractive index data.

• Ease of use: with Standard Operation Procedure (SOP), automatic alignment, automatic circulation & dispersion system, and the powerful software, sample analysis on Bettersizer S3 Plus can be a one-button operation.


Intelligent Particle Sizing Performance

Bettersizer S3 Plus defines a new era in particle sizing and shape measurement and a culmination of our years of experience excel in particle sizing and shape analysis instrumentation.

The accuracy of Bettersizer S3 Plus as verified by measurements of eight standard samples.

Bettersize 3000_pic4

Bettersizer S3 Plus measures samples with a wide distribution range. Six repeat measurement results under same analysis conditions yield good repeatability as shown in the following graph. Average repeatability deviation of D50 is 0.31%.


Detection limit test : A mixture reference standard samples of 3.1 µm and 5.1 µm nominal diameter was used to gauge the resolution of the Bettersizer S3 Plus against the industry benchmark particle sizing instrument. The mixing ratio of 1.65 was used for the test. Bettersizer S3 Plus clearly out-resolve the benchmark instrument as shown in the following graphs.


Test methodology: Measurement with a mix reference standard sample of 0.3mm, 0.85mm, and 3.5mm was performed against a benchmark instrument. Bettersizer S3 Plus resolves three peaks in the measurement result, while the benchmark instrument only able to resolve two peaks.



Particle size distribution Suspension, emulsion, dry powder
Theory Laser diffraction +automated imaging
Anslysis thoery Mie and Fraunhofer
Testing speed 3kHz
Typical measurement time ≤10 second
Size range 0.01 – 3500μm (particle size) 
4-3500μm (particle shape)
Number of size classes More than 100 customized grades
Particle shape Circularity,L/D,kinds of equivalent particle size
Refractive Index Refractive Index measurement
Accuracy ≤0.5% (GBRM D50)
Repeatability ≤0.5% (GBRM D50)
Resolution ratio Single peak, double peak, multi-peak
Green light source Max. 5mW, DPSSL pumping, 532nm
White light source Parallel homogenized light source, Image light
Lens arrangement Dual lenses on the right and left of sample cell, oblique incidence
Lens design F-Theta Lenses, 0.5X telecentric lens
Effective focal length 223mm, image focal length 110mm
Arrangement Log-spaced array
Quantity 96 pieces (forward, sideway, backward)
Angular detection range 0.02 – 165 degree
Light path adjustment Intelligent automatic alignment
Wet dispersion system Standard configuration
Dispersion system Ultrasound 50W, 38 KHz dry run protection system
Water circulation Centrifugal pump, 500 -2500 ml/min, auto water intake and rinsing
Water capacity 600 ml
21 CFR Part 11 Enable
SOP Designer Enable
Report More than 14 formats
Auto test Enable
Data export EXCEL, PDF, WORD, JPG and etc.
Laser class Class I laser product
Supply voltage 220VAC, 180W
Dimension 820mm x 610mm x 290mm (L x W x H)
Weight 48kg
Computer interface At least a USB2.0 port required
Operation system Windows XP, Windows 7,8 or 10
Hardware specification 500GB HD,
CPU: I7 2600 or above;
Memory: 4G or above;
Mainboard: With PCI-E interface, long and short card slot. 
Monitor resolution: 1680*1050 or above


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