Bettersizer S3 Plus - Particle Size and Shape Analyzer

The Bettersizer S3 Plus from Bettersize Instruments combines dynamic image analysis and laser diffraction in a single instrument.

This instrument is designed to measure the size and shape of particles ranging from 0.01 μm to 3500 μm. Its excellent sensitivity makes it ideally suited to the measurement of ultrafine particles or oversized particles, while its unsurpassed resolution makes the Bettersizer S3 Plus the most powerful size and shape analyzer available at its price point.

These features make the instrument a popular choice, with proactive researchers conducting a range of ground-breaking scientific research.

Features and Benefits

  • The system features two powerful systems with wide measuring ranges: 0.01 - 3500 μm (laser system) and 2 - 3500 μm (image system).
  • Size and shape results can be acquired simultaneously thanks to the presence of laser diffraction and dynamic image analysis capabilities in one instrument.
  • The patented DLOI (Dual Lenses & Oblique Incidence) system can accommodate ultrafine particle measurements down to 0.01 μm.
  • Powerful dual-camera imaging technology is able to show particle images in real-time, allowing the detection of oversized particles up to 3500 μm.
  • Refractive index measurement can be used to determine the refractive index of unknown samples, improving result reliability.
  • Full compliance with guidelines is assured, including 21 CFR Part 11, ISO 13320, USP <429>, and CE.


Source: Bettersize Instruments Ltd.

Bettersizer S3 Plus
Parameter Measured
Particle size distribution  Suspension, emulsion, dry powders
Particle shape
Principle Laser diffraction and dynamic image technologies
Analysis Mie scattering theory and Fraunhofer diffraction theory
Typical measurement time Less than 10 seconds
Measurement Performance
Measuring range 0.01 - 3500 μm (Laser System)
2 - 3500 μm (Image System)
Accuracy <0.5% (NIST certified standards)
Repeatability <0.5% (NIST certified standards)
Number of size classes ≤100 (adjustable)
Feeding mode Automatic circulation or semi-automatic circulation
Special functions Refractive index measurement, SOP settings
Image recognition Up to 120 fps, up to 10,000 particles per min
Main Device
Optical system Patented DLOI (Dual Lenses & Oblique Incidence) System
Laser Polarized light-pumped solid-state laser (10 mW / 532 nm)
Detector 96 detectors (forward, lateral and backward arrangements)
Measuring angle 0.02 - 165°
CCD cameras 0.5x and 10x *
Image analysis 1.2 megapixels
Dispersion Module
Circulation speed  300 - 2500 r/min 
Circulation flow rate  3000 - 8000 mL/min 
Untrasonication  Dry run protection, Max 50 W (adjustable) 
Circulation tank capacity  600 mL
Conformity  21 CFR Part 11, ISO 13320, ISO 13322, USP <429>, CE 
Report  Customizable reporting
System Parameters
Dimensions (L x W x H)  820 × 610 × 290 mm 
Weight  48 kg
Voltage DC 24 V, 50 / 60 Hz, 20 W
Computer Configuration (Recommended)
Computer interface  At least one high-speed USB 2.0 or USB 3.0 port required 
Operating system  Windows 7 / Windows 10 
Hardware specification  Intel Core i7, 8 GB RAM, 500 GB HD, two PCI-E X16 interfaces 

* The Bettersizer S3 Plus is also available in a single-camera (0.5x) model.

Bettersizer S3 Plus | Strive for Excellence in All You See

Video Credit: Bettersize Instruments Ltd.

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